Pub Date : 2024-03-27DOI: 10.1080/08997764.2024.2333368
Su Jung Kim, Ho Kim, Jaewon R. Choi, Edward C. Malthouse
Despite the increasing popularity of e-mail newsletters, there have been few studies that examine the effects of signing up for e-mail newsletters among news subscribers, especially its role in enh...
{"title":"Newly subscribed! Effects of e-mail newsletters on news-reading habit and subscriber retention during onboarding: evidence from clickstream and subscription data","authors":"Su Jung Kim, Ho Kim, Jaewon R. Choi, Edward C. Malthouse","doi":"10.1080/08997764.2024.2333368","DOIUrl":"https://doi.org/10.1080/08997764.2024.2333368","url":null,"abstract":"Despite the increasing popularity of e-mail newsletters, there have been few studies that examine the effects of signing up for e-mail newsletters among news subscribers, especially its role in enh...","PeriodicalId":29945,"journal":{"name":"JOURNAL OF MEDIA ECONOMICS","volume":"54 1","pages":""},"PeriodicalIF":0.3,"publicationDate":"2024-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140325150","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"经济学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-03-04DOI: 10.1080/08997764.2024.2322825
Christian Zabel, Reinhard E. Kunz, Verena Telkmann, Daniel O’Brien
This study explores the impact of strategic product characteristics (content and system quality), price value, and habit on attitudinal (word of mouth and brand perception) and behavioral (actual u...
{"title":"The show must go on(line): the impact of content and system quality on the usage of television streaming content libraries","authors":"Christian Zabel, Reinhard E. Kunz, Verena Telkmann, Daniel O’Brien","doi":"10.1080/08997764.2024.2322825","DOIUrl":"https://doi.org/10.1080/08997764.2024.2322825","url":null,"abstract":"This study explores the impact of strategic product characteristics (content and system quality), price value, and habit on attitudinal (word of mouth and brand perception) and behavioral (actual u...","PeriodicalId":29945,"journal":{"name":"JOURNAL OF MEDIA ECONOMICS","volume":"228 1","pages":""},"PeriodicalIF":0.3,"publicationDate":"2024-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140032578","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"经济学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-04-03DOI: 10.1080/08997764.2023.2224302
F. Völckner, Martin Spann, H. Sattler, Rouven Schwerdtfeger, T. Hennig-Thurau, M. Hirche
ABSTRACT Investments in new marketing offerings are notoriously risky, as they require firms to make judgments about an uncertain future. The authors develop an option-thinking framework for valuing and selecting new marketing offerings that combines real-options theory with virtual markets. They apply the framework and demonstrate its power empirically in the context of experiential content, where valuing marketing offerings constitutes a particularly challenging issue. Specifically, they test the proposed option-thinking framework in two experiential settings (movies and professional team sports) and compare it to current managerial practice. Each experiential setting deals with a common managerial marketing challenge. Study 1 examines extending a brand into a new category, and Study 2 investigates ingredient branding. The proposed framework provides managers with an empirical approach that enables them to consider the “value of waiting” when making investment decisions that involve uncertainty regarding future market developments.
{"title":"Applying option thinking to value experiential marketing content","authors":"F. Völckner, Martin Spann, H. Sattler, Rouven Schwerdtfeger, T. Hennig-Thurau, M. Hirche","doi":"10.1080/08997764.2023.2224302","DOIUrl":"https://doi.org/10.1080/08997764.2023.2224302","url":null,"abstract":"ABSTRACT Investments in new marketing offerings are notoriously risky, as they require firms to make judgments about an uncertain future. The authors develop an option-thinking framework for valuing and selecting new marketing offerings that combines real-options theory with virtual markets. They apply the framework and demonstrate its power empirically in the context of experiential content, where valuing marketing offerings constitutes a particularly challenging issue. Specifically, they test the proposed option-thinking framework in two experiential settings (movies and professional team sports) and compare it to current managerial practice. Each experiential setting deals with a common managerial marketing challenge. Study 1 examines extending a brand into a new category, and Study 2 investigates ingredient branding. The proposed framework provides managers with an empirical approach that enables them to consider the “value of waiting” when making investment decisions that involve uncertainty regarding future market developments.","PeriodicalId":29945,"journal":{"name":"JOURNAL OF MEDIA ECONOMICS","volume":"35 1","pages":"1 - 27"},"PeriodicalIF":0.3,"publicationDate":"2023-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42793969","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"经济学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-04-03DOI: 10.1080/08997764.2023.2232769
Walter von Mettenheim, Klaus-Peter Wiedmann
ABSTRACT Social influencer marketing has developed into a powerful form of marketing communication. Influencers, akin to any type of endorser, may commit transgressions. As influencers’ main field of activity is the internet, a transgression can propagate swiftly and cause damage to both an influencer and an endorsed brand. Against this backdrop, we contribute a framework that includes eleven transgressions typically caused by influencers and map the size of the detrimental impacts on the influencer and brand. We verify our assumptions with two empirical investigations including 237 and 616 data sets. In this way, we fill a gap in scandal frameworks and align our work with research on other types of celebrities. The results provide an overview of the impacts of transgressions. Likewise, we examine the specific characteristics of influencers that may appease the transgression. The results show that even supposedly minor transgressions, such as the use of swearwords or commercial sharenting, have negative impacts on an influencer and the endorsed brand. Overall, the effects for the brand may be mitigated to some extent if the influencer has a “bad girl” personality.
{"title":"Influencer transgressions: The impacts on endorser and brand","authors":"Walter von Mettenheim, Klaus-Peter Wiedmann","doi":"10.1080/08997764.2023.2232769","DOIUrl":"https://doi.org/10.1080/08997764.2023.2232769","url":null,"abstract":"ABSTRACT Social influencer marketing has developed into a powerful form of marketing communication. Influencers, akin to any type of endorser, may commit transgressions. As influencers’ main field of activity is the internet, a transgression can propagate swiftly and cause damage to both an influencer and an endorsed brand. Against this backdrop, we contribute a framework that includes eleven transgressions typically caused by influencers and map the size of the detrimental impacts on the influencer and brand. We verify our assumptions with two empirical investigations including 237 and 616 data sets. In this way, we fill a gap in scandal frameworks and align our work with research on other types of celebrities. The results provide an overview of the impacts of transgressions. Likewise, we examine the specific characteristics of influencers that may appease the transgression. The results show that even supposedly minor transgressions, such as the use of swearwords or commercial sharenting, have negative impacts on an influencer and the endorsed brand. Overall, the effects for the brand may be mitigated to some extent if the influencer has a “bad girl” personality.","PeriodicalId":29945,"journal":{"name":"JOURNAL OF MEDIA ECONOMICS","volume":"35 1","pages":"28 - 62"},"PeriodicalIF":0.3,"publicationDate":"2023-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46415078","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"经济学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-10-02DOI: 10.1080/08997764.2022.2149159
Reinhard E. Kunz, Christian Zabel, Verena Telkmann
ABSTRACT The aim of this research was to conceptualize and measure the flow experience of Virtual Reality (VR) gaming as well as to develop and empirically test a research model that explains flow experience and subsequent usage behavior. This model highlights the effects of content-, system-, and hardware-related factors on flow, as well as the relevance of interaction effects. Based on a large survey of 1,784 German VR users, the structural equation model showed that gaming motives, perceived content quality, content range, system quality and barriers to VR usage significantly influence the experience of flow in VR gaming and thus behavioral intention and usage. Age, gamer identification, and VR technology experience had interaction effects with several of these relationships. This study contributes a multidimensional conception of flow and a better understanding of its antecedents and consequences. It yields practical implications by highlighting the need not only to differentiate between self-identified gamers and non-gamers but also to consider previous VR experience and the impact of real-world circumstances in the development and marketing of VR games.
{"title":"Content-, system-, and hardware-related effects on the experience of flow in VR gaming","authors":"Reinhard E. Kunz, Christian Zabel, Verena Telkmann","doi":"10.1080/08997764.2022.2149159","DOIUrl":"https://doi.org/10.1080/08997764.2022.2149159","url":null,"abstract":"ABSTRACT The aim of this research was to conceptualize and measure the flow experience of Virtual Reality (VR) gaming as well as to develop and empirically test a research model that explains flow experience and subsequent usage behavior. This model highlights the effects of content-, system-, and hardware-related factors on flow, as well as the relevance of interaction effects. Based on a large survey of 1,784 German VR users, the structural equation model showed that gaming motives, perceived content quality, content range, system quality and barriers to VR usage significantly influence the experience of flow in VR gaming and thus behavioral intention and usage. Age, gamer identification, and VR technology experience had interaction effects with several of these relationships. This study contributes a multidimensional conception of flow and a better understanding of its antecedents and consequences. It yields practical implications by highlighting the need not only to differentiate between self-identified gamers and non-gamers but also to consider previous VR experience and the impact of real-world circumstances in the development and marketing of VR games.","PeriodicalId":29945,"journal":{"name":"JOURNAL OF MEDIA ECONOMICS","volume":"34 1","pages":"213 - 242"},"PeriodicalIF":0.3,"publicationDate":"2022-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45697516","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"经济学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-10-02DOI: 10.1080/08997764.2023.2177655
Pei-An Liao, Min-Xue Zhuang, Wen‐Jhan Jane, Y. Hsu
ABSTRACT This paper examines the effects of star power and cultural distance on box office revenue. Movies released in Taiwan from 2015 to 2019 are collected as the sample. Combined it with the data of movies which were not imported in Taiwan, we propose the Heckit model to cope with the endogeneity decision for distributors as the empirical methodology for the sample selection problem. The results indicate that cultural differences have a negative and significant impact on box office performance. In addition, a U-shape relationship between box office revenue and cultural distance is observed, which improves the cultural discount theory. Star power is measured in several different ways and consistently shows a positive and significant effect on box office revenue. Finally, our results further indicate that with the same cultural distance, the movies with distinguished cast can generate higher box office revenue than the movies without distinguished cast. Star power is sufficient to mitigate the negative effect resulting from cultural differences.
{"title":"Does star power mitigate the negative effect of cultural distance on box office revenue? Evidence from Taiwan","authors":"Pei-An Liao, Min-Xue Zhuang, Wen‐Jhan Jane, Y. Hsu","doi":"10.1080/08997764.2023.2177655","DOIUrl":"https://doi.org/10.1080/08997764.2023.2177655","url":null,"abstract":"ABSTRACT This paper examines the effects of star power and cultural distance on box office revenue. Movies released in Taiwan from 2015 to 2019 are collected as the sample. Combined it with the data of movies which were not imported in Taiwan, we propose the Heckit model to cope with the endogeneity decision for distributors as the empirical methodology for the sample selection problem. The results indicate that cultural differences have a negative and significant impact on box office performance. In addition, a U-shape relationship between box office revenue and cultural distance is observed, which improves the cultural discount theory. Star power is measured in several different ways and consistently shows a positive and significant effect on box office revenue. Finally, our results further indicate that with the same cultural distance, the movies with distinguished cast can generate higher box office revenue than the movies without distinguished cast. Star power is sufficient to mitigate the negative effect resulting from cultural differences.","PeriodicalId":29945,"journal":{"name":"JOURNAL OF MEDIA ECONOMICS","volume":"34 1","pages":"243 - 265"},"PeriodicalIF":0.3,"publicationDate":"2022-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46519632","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"经济学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-10-02DOI: 10.1080/08997764.2023.2182789
Lea Bernhardt, R. Dewenter
ABSTRACT In this paper, we empirically examine German media reports about politicians with regard to gender differences in the reporting. We analyze a comprehensive dataset with coded reports from both public and private media outlets between 1998 and 2012 and estimate the tonality of the coverage using logit models. Overall, we find a more or less balanced reporting with only small differences in the reporting about male and female politicians. An analysis of gender differences by the five largest political parties reveals some interesting results as women in the conservative parties are more likely to receive a positive media coverage than their fellow male party members. On the contrary, women in the Left Party are more likely to receive a negative media coverage. As the results are statistically significant but small in magnitude, we conclude that there is no substantial indication of a gender bias in German Media, although there are some interesting differences by political parties.
{"title":"Gender Bias in German Media Reports","authors":"Lea Bernhardt, R. Dewenter","doi":"10.1080/08997764.2023.2182789","DOIUrl":"https://doi.org/10.1080/08997764.2023.2182789","url":null,"abstract":"ABSTRACT In this paper, we empirically examine German media reports about politicians with regard to gender differences in the reporting. We analyze a comprehensive dataset with coded reports from both public and private media outlets between 1998 and 2012 and estimate the tonality of the coverage using logit models. Overall, we find a more or less balanced reporting with only small differences in the reporting about male and female politicians. An analysis of gender differences by the five largest political parties reveals some interesting results as women in the conservative parties are more likely to receive a positive media coverage than their fellow male party members. On the contrary, women in the Left Party are more likely to receive a negative media coverage. As the results are statistically significant but small in magnitude, we conclude that there is no substantial indication of a gender bias in German Media, although there are some interesting differences by political parties.","PeriodicalId":29945,"journal":{"name":"JOURNAL OF MEDIA ECONOMICS","volume":"34 1","pages":"266 - 283"},"PeriodicalIF":0.3,"publicationDate":"2022-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48099100","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"经济学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-07-03DOI: 10.1080/08997764.2022.2115502
Y. Zhou
ABSTRACT In this paper, the network perspective is combined with the clustering theory to investigate the power structure, cooperation network, and spatial distribution of Chinese film clusters between 2010 and 2020. The top 20 grossing films are collected. Moreover, three types of network, including network between directors and companies, inter- and intra-firm network and inter-city network, are established on the basis of the social network analysis and the data processing in Python. In this paper, the imbalance between the power structure and the film resource distribution is demonstrated. In addition, it is revealed that small coteries exist in China’s film clusters. The above small coteries are more significantly connected under the network, while there are relatively sparse connections outside the network. Several emerging eastern cities (e.g., Hangzhou and Nanjing) have stood out, which may be conducive to reducing the absolute monopoly of Beijing, Hong Kong and Shanghai in the China’s film industry.
{"title":"Power, linkages and space: an exploratory study of China’s film cluster from 2010 to 2020","authors":"Y. Zhou","doi":"10.1080/08997764.2022.2115502","DOIUrl":"https://doi.org/10.1080/08997764.2022.2115502","url":null,"abstract":"ABSTRACT In this paper, the network perspective is combined with the clustering theory to investigate the power structure, cooperation network, and spatial distribution of Chinese film clusters between 2010 and 2020. The top 20 grossing films are collected. Moreover, three types of network, including network between directors and companies, inter- and intra-firm network and inter-city network, are established on the basis of the social network analysis and the data processing in Python. In this paper, the imbalance between the power structure and the film resource distribution is demonstrated. In addition, it is revealed that small coteries exist in China’s film clusters. The above small coteries are more significantly connected under the network, while there are relatively sparse connections outside the network. Several emerging eastern cities (e.g., Hangzhou and Nanjing) have stood out, which may be conducive to reducing the absolute monopoly of Beijing, Hong Kong and Shanghai in the China’s film industry.","PeriodicalId":29945,"journal":{"name":"JOURNAL OF MEDIA ECONOMICS","volume":"34 1","pages":"176 - 193"},"PeriodicalIF":0.3,"publicationDate":"2022-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48296497","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"经济学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-07-03DOI: 10.1080/08997764.2022.2115503
Eric Mao
ABSTRACT Previous research on the effectiveness of event marketing was predominantly focused on single events and individual participants. This paper aims to expand the scope of inquiry into this topic by investigating how the frequency and magnitude of esports tournament events affect the numbers of Twitch live-stream viewers and channels. Data containing the monthly averages of Twitch viewers and channels in addition to the event dates and prize sizes of esports tournaments were collected from publicly available online sources. 829 monthly observations involving 17 popular esports games were analyzed and the results were further validated by robustness check. It was found that the frequency of esports tournament events significantly increased both the live-stream viewers and channels. However, event magnitude only positively affected viewership but had a negative impact on the number of active Twitch channels. This work applies underused metrics to appraise the effectiveness of event marketing in an attention economy. Empirical evidence based on event frequency and magnitude confirms the marketing efficacy of esports tournament events in captivating viewer attention. On the other hand, however, there might exist a substantial inequality in the distribution of attention (i.e., monetization opportunities) between big and small Twitch streamers.
{"title":"The effectiveness of event marketing in an attention economy: Findings from Twitch live-stream esports tournament events","authors":"Eric Mao","doi":"10.1080/08997764.2022.2115503","DOIUrl":"https://doi.org/10.1080/08997764.2022.2115503","url":null,"abstract":"ABSTRACT Previous research on the effectiveness of event marketing was predominantly focused on single events and individual participants. This paper aims to expand the scope of inquiry into this topic by investigating how the frequency and magnitude of esports tournament events affect the numbers of Twitch live-stream viewers and channels. Data containing the monthly averages of Twitch viewers and channels in addition to the event dates and prize sizes of esports tournaments were collected from publicly available online sources. 829 monthly observations involving 17 popular esports games were analyzed and the results were further validated by robustness check. It was found that the frequency of esports tournament events significantly increased both the live-stream viewers and channels. However, event magnitude only positively affected viewership but had a negative impact on the number of active Twitch channels. This work applies underused metrics to appraise the effectiveness of event marketing in an attention economy. Empirical evidence based on event frequency and magnitude confirms the marketing efficacy of esports tournament events in captivating viewer attention. On the other hand, however, there might exist a substantial inequality in the distribution of attention (i.e., monetization opportunities) between big and small Twitch streamers.","PeriodicalId":29945,"journal":{"name":"JOURNAL OF MEDIA ECONOMICS","volume":"34 1","pages":"194 - 211"},"PeriodicalIF":0.3,"publicationDate":"2022-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46089807","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"经济学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-07-03DOI: 10.1080/08997764.2022.2099874
Ishraq Ahmed
ABSTRACT This paper examines the relationship between television exposure and women’s reproductive behavior in Uganda. There is very little research that has explored the impact of television on the current adoption of modern contraceptives and to our knowledge, no studies have looked at the relationship between family planning programs on TV and the use of modern birth control in Uganda. We find that watching television and specifically watching family planning programs on television is positively associated with the current use of modern contraceptives. Increased frequency of watching TV is also associated with greater use of modern contraceptives. We further find that women exposed to television also changed other aspects of reproductive behavior – preference for a certain number of children and the decision to use any birth control to avoid pregnancy. Our results indicate that continued access to television and family planning programs on television has the potential to alter reproductive behavior and provide women with information and choice to adopt modern methods of birth control.
{"title":"Television and women’s reproductive behavior: evidence from Uganda","authors":"Ishraq Ahmed","doi":"10.1080/08997764.2022.2099874","DOIUrl":"https://doi.org/10.1080/08997764.2022.2099874","url":null,"abstract":"ABSTRACT This paper examines the relationship between television exposure and women’s reproductive behavior in Uganda. There is very little research that has explored the impact of television on the current adoption of modern contraceptives and to our knowledge, no studies have looked at the relationship between family planning programs on TV and the use of modern birth control in Uganda. We find that watching television and specifically watching family planning programs on television is positively associated with the current use of modern contraceptives. Increased frequency of watching TV is also associated with greater use of modern contraceptives. We further find that women exposed to television also changed other aspects of reproductive behavior – preference for a certain number of children and the decision to use any birth control to avoid pregnancy. Our results indicate that continued access to television and family planning programs on television has the potential to alter reproductive behavior and provide women with information and choice to adopt modern methods of birth control.","PeriodicalId":29945,"journal":{"name":"JOURNAL OF MEDIA ECONOMICS","volume":"34 1","pages":"135 - 151"},"PeriodicalIF":0.3,"publicationDate":"2022-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45217038","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"经济学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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