Pub Date : 2025-01-29DOI: 10.1177/10422587241311155
Nehad Ali, Boyka Simeonova, Mathew Hughes
Drawing on goal-setting and stewardship theories, this study examines the management of family and business goals in family firms under transgenerational complexity, presenting a dynamic model of family stewardship. Through multiple case studies, we identify four distinct stewardship strategies, each with a corresponding governance structure: cultivating family stewardship (with family-dense governance), professionalizing family stewardship (with professionalized governance), harnessing external stewardship (with externally dense governance), and perpetuating external stewardship (with public companies’ governance). These strategies shift from family-centric to business-centric goal-setting approaches in sustaining the family firm. The study introduces stewardship transition capability as a missing cog for managing these transitions.
{"title":"Evolution of Stewardship Across Family and Business Goals: Toward a Stewardship Transition Framework","authors":"Nehad Ali, Boyka Simeonova, Mathew Hughes","doi":"10.1177/10422587241311155","DOIUrl":"https://doi.org/10.1177/10422587241311155","url":null,"abstract":"Drawing on goal-setting and stewardship theories, this study examines the management of family and business goals in family firms under transgenerational complexity, presenting a dynamic model of family stewardship. Through multiple case studies, we identify four distinct stewardship strategies, each with a corresponding governance structure: cultivating family stewardship (with family-dense governance), professionalizing family stewardship (with professionalized governance), harnessing external stewardship (with externally dense governance), and perpetuating external stewardship (with public companies’ governance). These strategies shift from family-centric to business-centric goal-setting approaches in sustaining the family firm. The study introduces stewardship transition capability as a missing cog for managing these transitions.","PeriodicalId":48443,"journal":{"name":"Entrepreneurship Theory and Practice","volume":"32 1","pages":""},"PeriodicalIF":10.5,"publicationDate":"2025-01-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143056522","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"管理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-01-24DOI: 10.1177/10422587241311118
Juliana Bonomi Santos, Bruno Brandão Fischer, André Cherubini Alves, Philip T. Roundy
Despite its importance to the functioning of entrepreneurial ecosystems (EEs), the orchestration of networks remains a largely undertheorized topic. To address this “omission,” we sought to explain the interplay between networks, their orchestrators, and their implications for ecosystem outcomes. To do so, we conducted an in-depth case study of the Agtech Valley EE in Brazil. From our study, we developed theoretical insights on the notion of “ecosystem coherence” as a foundational driver of EE structuration. Findings revealed two dimensions of ecosystem coherence: capabilities coherence (based on organizational and cognitive proximities) and relationship coherence (based on institutional and social proximities).
{"title":"Unpacking the Nature of Orchestrator Coherence in Entrepreneurial Ecosystems","authors":"Juliana Bonomi Santos, Bruno Brandão Fischer, André Cherubini Alves, Philip T. Roundy","doi":"10.1177/10422587241311118","DOIUrl":"https://doi.org/10.1177/10422587241311118","url":null,"abstract":"Despite its importance to the functioning of entrepreneurial ecosystems (EEs), the orchestration of networks remains a largely undertheorized topic. To address this “omission,” we sought to explain the interplay between networks, their orchestrators, and their implications for ecosystem outcomes. To do so, we conducted an in-depth case study of the Agtech Valley EE in Brazil. From our study, we developed theoretical insights on the notion of “ecosystem coherence” as a foundational driver of EE structuration. Findings revealed two dimensions of ecosystem coherence: capabilities coherence (based on organizational and cognitive proximities) and relationship coherence (based on institutional and social proximities).","PeriodicalId":48443,"journal":{"name":"Entrepreneurship Theory and Practice","volume":"3 1","pages":""},"PeriodicalIF":10.5,"publicationDate":"2025-01-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143030909","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"管理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-01-22DOI: 10.1177/10422587241300432
Jess H. Chua, James J. Chrisman, Hao Wang, Saisai Wu
Long-term orientation has been proposed as one of the differences between family and nonfamily firms. Family business scholars base this difference theoretically on the incumbent generation’s altruism for the next generation and the intention for intrafamily succession. We point out that the applicable boundaries for these two theoretical bases are limited. We also point out misconceptions regarding what these two theoretical bases imply about the long-term oriented behavior of family businesses and discuss implications for empirical research and theory development.
{"title":"Misconceptions About the Theoretical Support for Family Firm Long-Term Orientation","authors":"Jess H. Chua, James J. Chrisman, Hao Wang, Saisai Wu","doi":"10.1177/10422587241300432","DOIUrl":"https://doi.org/10.1177/10422587241300432","url":null,"abstract":"Long-term orientation has been proposed as one of the differences between family and nonfamily firms. Family business scholars base this difference theoretically on the incumbent generation’s altruism for the next generation and the intention for intrafamily succession. We point out that the applicable boundaries for these two theoretical bases are limited. We also point out misconceptions regarding what these two theoretical bases imply about the long-term oriented behavior of family businesses and discuss implications for empirical research and theory development.","PeriodicalId":48443,"journal":{"name":"Entrepreneurship Theory and Practice","volume":"66 1","pages":""},"PeriodicalIF":10.5,"publicationDate":"2025-01-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143020480","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"管理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-01-06DOI: 10.1177/10422587241302702
Zulfiquer Ali Haider, Douglas J. Cumming, Zhenyu Wu
This study explores groupthink on the boards of family firms. We conjecture that institutional investors, in the face of principal–principal agency issues, are discouraged by groupthink and consequently invest less in family firms. Appropriate corporate governance in the form of greater board diversity, lower director tenure, busier boards, more financial disclosure, and bigger shareholder voice should help in alleviating these institutional investor concerns. We examine a sample of firms from the S&P 500 and find evidence consistent with these propositions. Also, we provide evidence that board generational heterogeneity in family firms exacerbates groupthink.
{"title":"Groupthink in the Board of Family Firms: The Case of Institutional Investment","authors":"Zulfiquer Ali Haider, Douglas J. Cumming, Zhenyu Wu","doi":"10.1177/10422587241302702","DOIUrl":"https://doi.org/10.1177/10422587241302702","url":null,"abstract":"This study explores groupthink on the boards of family firms. We conjecture that institutional investors, in the face of principal–principal agency issues, are discouraged by groupthink and consequently invest less in family firms. Appropriate corporate governance in the form of greater board diversity, lower director tenure, busier boards, more financial disclosure, and bigger shareholder voice should help in alleviating these institutional investor concerns. We examine a sample of firms from the S&P 500 and find evidence consistent with these propositions. Also, we provide evidence that board generational heterogeneity in family firms exacerbates groupthink.","PeriodicalId":48443,"journal":{"name":"Entrepreneurship Theory and Practice","volume":"22 1","pages":""},"PeriodicalIF":10.5,"publicationDate":"2025-01-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142935101","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"管理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-01-03DOI: 10.1177/10422587241300438
Onur Bayar, Thomas J. Chemmanur, Harshit Rajaiya, Xuan Tian, Qianqian Yu
We theoretically model an entrepreneur’s choice of his firm’s products to trademark, the relation between the number of trademarks and venture capital (VC) investment staging, long-run operating performance, and successful firm exit probability. We test model predictions using a large dataset of trademarks registered by VC-backed private US firms. We find that firms with a larger number of trademarks at first VC investment have a smaller number of VC financing rounds; have larger long-run sales and employment; and have greater probabilities of successful exit (initial public offering [IPO] or acquisition). Our instrumental variable analysis demonstrates that more trademarks causally enhance firm performance and reduce VC staging.JEL code: G23, G24, L26, O34
{"title":"Trademarks and Entrepreneurial Firm Success: Theory and Evidence from Venture Capital Investments in Private Firms","authors":"Onur Bayar, Thomas J. Chemmanur, Harshit Rajaiya, Xuan Tian, Qianqian Yu","doi":"10.1177/10422587241300438","DOIUrl":"https://doi.org/10.1177/10422587241300438","url":null,"abstract":"We theoretically model an entrepreneur’s choice of his firm’s products to trademark, the relation between the number of trademarks and venture capital (VC) investment staging, long-run operating performance, and successful firm exit probability. We test model predictions using a large dataset of trademarks registered by VC-backed private US firms. We find that firms with a larger number of trademarks at first VC investment have a smaller number of VC financing rounds; have larger long-run sales and employment; and have greater probabilities of successful exit (initial public offering [IPO] or acquisition). Our instrumental variable analysis demonstrates that more trademarks causally enhance firm performance and reduce VC staging.JEL code: G23, G24, L26, O34","PeriodicalId":48443,"journal":{"name":"Entrepreneurship Theory and Practice","volume":"83 1","pages":""},"PeriodicalIF":10.5,"publicationDate":"2025-01-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142924607","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"管理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-12-27DOI: 10.1177/10422587241306872
Kai C. Bormann
I introduce variability in decision-making (VDM) as a construct that covers the extent to which entrepreneurs switch between analytic and intuitive decision-making over time. Drawing from self-regulation theories, I developed a model that explains how VDM is negatively related to taking charge behavior (TCB) and is driven by entrepreneurs’ regulatory focus strategies. This model is tested using a dataset covering 438 daily observations from 53 entrepreneurs and matched data from non-entrepreneurs. The results show that VDM leads to decreased TCB via decreased self-efficacy and optimism. Prevention but not promotion focus predicted VDM. These associations emerged for entrepreneurs but not for non-entrepreneurs.
{"title":"A Self-Regulatory Model of Entrepreneurs’ Variability in Decision-Making and Taking Charge Behavior","authors":"Kai C. Bormann","doi":"10.1177/10422587241306872","DOIUrl":"https://doi.org/10.1177/10422587241306872","url":null,"abstract":"I introduce variability in decision-making (VDM) as a construct that covers the extent to which entrepreneurs switch between analytic and intuitive decision-making over time. Drawing from self-regulation theories, I developed a model that explains how VDM is negatively related to taking charge behavior (TCB) and is driven by entrepreneurs’ regulatory focus strategies. This model is tested using a dataset covering 438 daily observations from 53 entrepreneurs and matched data from non-entrepreneurs. The results show that VDM leads to decreased TCB via decreased self-efficacy and optimism. Prevention but not promotion focus predicted VDM. These associations emerged for entrepreneurs but not for non-entrepreneurs.","PeriodicalId":48443,"journal":{"name":"Entrepreneurship Theory and Practice","volume":"35 1","pages":""},"PeriodicalIF":10.5,"publicationDate":"2024-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142887363","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"管理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-12-18DOI: 10.1177/10422587241302703
W. J. (Werner) Liebregts, J. P. C. (Coen) Rigtering, N. S. (Niels) Bosma
How uncertainty affects entrepreneurship is a central theme in entrepreneurship research. However, evidence for how a culture of uncertainty avoidance (UA) influences entrepreneurial activity is mixed. Unlike prior research, we theorize and test how UA practices allocate individuals across two modes of opportunity exploitation. Our findings show that uncertainty-avoidant cultures channel individuals toward intrapreneurship rather than entrepreneurship. Moreover, we find a cross-level interaction effect with individuals’ fear of entrepreneurial failure; stronger UA practices direct failure-fearing individuals even more toward intrapreneurship. These findings shed new light on the complex relationship between UA and the prevalence of different forms of entrepreneurial activity.JEL Classification: J24; L26; M13; O43; O57.
{"title":"Uncertainty Avoidance and the Allocation of Entrepreneurial Activity across Entrepreneurship and Intrapreneurship","authors":"W. J. (Werner) Liebregts, J. P. C. (Coen) Rigtering, N. S. (Niels) Bosma","doi":"10.1177/10422587241302703","DOIUrl":"https://doi.org/10.1177/10422587241302703","url":null,"abstract":"How uncertainty affects entrepreneurship is a central theme in entrepreneurship research. However, evidence for how a culture of uncertainty avoidance (UA) influences entrepreneurial activity is mixed. Unlike prior research, we theorize and test how UA practices allocate individuals across two modes of opportunity exploitation. Our findings show that uncertainty-avoidant cultures channel individuals toward intrapreneurship rather than entrepreneurship. Moreover, we find a cross-level interaction effect with individuals’ fear of entrepreneurial failure; stronger UA practices direct failure-fearing individuals even more toward intrapreneurship. These findings shed new light on the complex relationship between UA and the prevalence of different forms of entrepreneurial activity.JEL Classification: J24; L26; M13; O43; O57.","PeriodicalId":48443,"journal":{"name":"Entrepreneurship Theory and Practice","volume":"79 1","pages":""},"PeriodicalIF":10.5,"publicationDate":"2024-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142849029","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"管理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-12-18DOI: 10.1177/10422587241304707
Dean A. Shepherd, Vinit Parida, Joakim Wincent
Although much has been made about heroic entrepreneurs, there is recent interest in less glamorous forms of entrepreneurship. The least glamorous is dirty entrepreneurship. In this study, we used an inductive approach and a sample of entrepreneurs engaged in dirty plastic recycling businesses to develop an intersectionality model of entrepreneurs’ dirty recycling businesses. This inductive study offers new insights into how individuals’ intersectionality pushes them into dirty entrepreneurship, how they approach their businesses, and who they stigmatize. Interestingly, individuals’ dirty place and caste push them into dirty entrepreneurship that collectively cleans the environment despite not intending to do so.
{"title":"Dirty Entrepreneurship: The Intersectionality of Entrepreneurs’ Dirty Recycling Businesses","authors":"Dean A. Shepherd, Vinit Parida, Joakim Wincent","doi":"10.1177/10422587241304707","DOIUrl":"https://doi.org/10.1177/10422587241304707","url":null,"abstract":"Although much has been made about heroic entrepreneurs, there is recent interest in less glamorous forms of entrepreneurship. The least glamorous is dirty entrepreneurship. In this study, we used an inductive approach and a sample of entrepreneurs engaged in dirty plastic recycling businesses to develop an intersectionality model of entrepreneurs’ dirty recycling businesses. This inductive study offers new insights into how individuals’ intersectionality pushes them into dirty entrepreneurship, how they approach their businesses, and who they stigmatize. Interestingly, individuals’ dirty place and caste push them into dirty entrepreneurship that collectively cleans the environment despite not intending to do so.","PeriodicalId":48443,"journal":{"name":"Entrepreneurship Theory and Practice","volume":"51 1","pages":""},"PeriodicalIF":10.5,"publicationDate":"2024-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142849084","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"管理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-12-17DOI: 10.1177/10422587241304676
Martin Obschonka, Denis A. Grégoire, Boris Nikolaev, Frédéric Ooms, Moren Lévesque, Jeffrey M. Pollack, Tara S. Behrend
Entrepreneurship has entered a new era shaped by artificial intelligence (AI), demanding accelerated scholarly advances to keep pace with this transformative technology—yet this demands that academics bridge the gap between the AI revolution’s ambiguities and meaningful scholarly contributions. To motivate and guide future research on AI’s transformative role in entrepreneurship, we introduce an ongoing special issue in Entrepreneurship Theory and Practice ( ETP) and outline multiple compelling opportunities for future research. Unlike typical editorials, we offer a prospective vision—rather than retrospective, after the articles have been accepted and published—at this project’s outset, to empower the field to prospect and establish new scholarly foundations in the relatively uncharted world of AI in the domain of entrepreneurship. Accordingly, we highlight the “AI PEN” (Prospecting and Establishing Nexus) as a desirable research approach to advance this literature going forward. We hope, and anticipate, that our invitation to submit proposals to this special issue facilitates novel empirical as well as theory-focused contributions to the literature.
创业已经进入了一个由人工智能（AI）塑造的新时代，需要加快学术进步以跟上这种变革性技术的步伐——但这要求学术界弥合人工智能革命的模糊性与有意义的学术贡献之间的差距。为了激励和指导未来关于人工智能在创业中的变革性作用的研究，我们在创业理论与实践（ETP）中引入了一个正在进行的特刊，并概述了未来研究的多个引人注目的机会。与典型的社论不同，我们提供了一个前瞻性的愿景，而不是回顾，在文章被接受和发表之后，在这个项目的一开始，授权该领域在创业领域相对未知的人工智能世界中展望和建立新的学术基础。因此，我们强调“AI PEN”（looking and establish Nexus）是推进这一文献向前发展的理想研究方法。我们希望，并预期，我们的邀请提交提案，这一特殊问题，促进新颖的经验以及理论为重点的文献贡献。
{"title":"Artificial Intelligence and Entrepreneurship: A Call for Research to Prospect and Establish the Scholarly AI Frontiers","authors":"Martin Obschonka, Denis A. Grégoire, Boris Nikolaev, Frédéric Ooms, Moren Lévesque, Jeffrey M. Pollack, Tara S. Behrend","doi":"10.1177/10422587241304676","DOIUrl":"https://doi.org/10.1177/10422587241304676","url":null,"abstract":"Entrepreneurship has entered a new era shaped by artificial intelligence (AI), demanding accelerated scholarly advances to keep pace with this transformative technology—yet this demands that academics bridge the gap between the AI revolution’s ambiguities and meaningful scholarly contributions. To motivate and guide future research on AI’s transformative role in entrepreneurship, we introduce an ongoing special issue in Entrepreneurship Theory and Practice ( ETP) and outline multiple compelling opportunities for future research. Unlike typical editorials, we offer a prospective vision—rather than retrospective, after the articles have been accepted and published—at this project’s outset, to empower the field to prospect and establish new scholarly foundations in the relatively uncharted world of AI in the domain of entrepreneurship. Accordingly, we highlight the “AI PEN” (Prospecting and Establishing Nexus) as a desirable research approach to advance this literature going forward. We hope, and anticipate, that our invitation to submit proposals to this special issue facilitates novel empirical as well as theory-focused contributions to the literature.","PeriodicalId":48443,"journal":{"name":"Entrepreneurship Theory and Practice","volume":"3 1","pages":""},"PeriodicalIF":10.5,"publicationDate":"2024-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142841949","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"管理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-11-09DOI: 10.1177/10422587241288108
Johanna Kuske, Matthias Schulz, Christian Schwens
Current theorizing on learning during hybrid entrepreneurship is limited in explaining the circumstances under which entrepreneurs’ well-being benefits from a preceding phase in hybrid entrepreneurship. Using existing theory on entrepreneurial learning and role conflict, we argue that interfering demands from roles outside entrepreneurship constrain hybrid entrepreneurs’ ability to transform experiences into skills that protect their well-being when they enter full entrepreneurship. Moreover, we argue that interfering role demands affect female and male hybrid entrepreneurs differently. We test the hypotheses using panel data. Our study contributes to entrepreneurship research on hybrid entrepreneurship, well-being, role conflict, and gender differences.
{"title":"Hybrid Entrepreneurship and Entrepreneurs’ Well-Being: The Moderating Effect of Role Demands Outside Entrepreneurship","authors":"Johanna Kuske, Matthias Schulz, Christian Schwens","doi":"10.1177/10422587241288108","DOIUrl":"https://doi.org/10.1177/10422587241288108","url":null,"abstract":"Current theorizing on learning during hybrid entrepreneurship is limited in explaining the circumstances under which entrepreneurs’ well-being benefits from a preceding phase in hybrid entrepreneurship. Using existing theory on entrepreneurial learning and role conflict, we argue that interfering demands from roles outside entrepreneurship constrain hybrid entrepreneurs’ ability to transform experiences into skills that protect their well-being when they enter full entrepreneurship. Moreover, we argue that interfering role demands affect female and male hybrid entrepreneurs differently. We test the hypotheses using panel data. Our study contributes to entrepreneurship research on hybrid entrepreneurship, well-being, role conflict, and gender differences.","PeriodicalId":48443,"journal":{"name":"Entrepreneurship Theory and Practice","volume":"33 1","pages":""},"PeriodicalIF":10.5,"publicationDate":"2024-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142596526","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"管理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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