Pub Date : 2021-01-01Epub Date: 2021-05-10DOI: 10.1080/19439342.2021.1924833
Jonathan Bauchet, Eduardo A Undurraga, Ariela Zycherman, Jere R Behrman, William R Leonard, Ricardo A Godoy
Some research suggests women are more likely to allocate additional resources to their children than are men. This perception has influenced policies such as in-kind food transfer programs and cash transfer programs, which often target women recipients. We assess whether targeting in-kind rice transfers to female versus male adult household members has a differential impact on children's short-run nutritional status. We estimate the impacts of transfers of edible rice and rice seeds, randomly allocated to female or male adults, on three anthropometric indicators: BMI-for-age, arm-muscle area, and triceps skinfold thickness. The trial includes 481 children aged 3-11 years in a horticultural-foraging society of native Amazonians in Bolivia. On average, the gender of the transfer recipient does not influence child anthropometric dimensions, possibly due to norms of cooperation and sharing within and between households. We find limited evidence of heterogeneity in impacts. Transfers to women help children who were growth stunted at baseline to partially catch-up to their better-nourished age-sex peers and help boys (but not girls) and children in higher-income households increase their BMI-for-age. The results of this research point to the importance of considering cultural context in determining if allocating food transfers according to gender are most effective.
{"title":"The effect of gender targeting of food transfers on child nutritional status: Experimental evidence from the Bolivian Amazon.","authors":"Jonathan Bauchet, Eduardo A Undurraga, Ariela Zycherman, Jere R Behrman, William R Leonard, Ricardo A Godoy","doi":"10.1080/19439342.2021.1924833","DOIUrl":"https://doi.org/10.1080/19439342.2021.1924833","url":null,"abstract":"<p><p>Some research suggests women are more likely to allocate additional resources to their children than are men. This perception has influenced policies such as in-kind food transfer programs and cash transfer programs, which often target women recipients. We assess whether targeting in-kind rice transfers to female versus male adult household members has a differential impact on children's short-run nutritional status. We estimate the impacts of transfers of edible rice and rice seeds, randomly allocated to female or male adults, on three anthropometric indicators: BMI-for-age, arm-muscle area, and triceps skinfold thickness. The trial includes 481 children aged 3-11 years in a horticultural-foraging society of native Amazonians in Bolivia. On average, the gender of the transfer recipient does not influence child anthropometric dimensions, possibly due to norms of cooperation and sharing within and between households. We find limited evidence of heterogeneity in impacts. Transfers to women help children who were growth stunted at baseline to partially catch-up to their better-nourished age-sex peers and help boys (but not girls) and children in higher-income households increase their BMI-for-age. The results of this research point to the importance of considering cultural context in determining if allocating food transfers according to gender are most effective.</p>","PeriodicalId":46384,"journal":{"name":"Journal of Development Effectiveness","volume":"13 3","pages":"276-291"},"PeriodicalIF":0.9,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/19439342.2021.1924833","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39807873","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"经济学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-12-02DOI: 10.1080/19439342.2020.1853794
S. Pandey, A. Daley
ABSTRACT In July 2005, Nepal introduced the ‘Safe Delivery Incentive Programme’, which included free delivery care and supply-side incentives for women in the poorest districts. Using a difference-in-differences model and microdata from the Demographic and Health Surveys, we find the policy increased the probability of prenatal care and neonatal tetanus vaccinations, offsetting disparities between women in the poorest districts and rest of Nepal. Moreover, it was associated with a change in the source of prenatal care, from ‘other’ providers to nurses/midwives. Finally, we find that health investment decisions are interconnected across pregnancy stages; free delivery and supply-side incentives affected prenatal care.
{"title":"Free delivery care and supply-side incentives in Nepal’s poorest districts: the effect on prenatal care and neonatal tetanus vaccinations","authors":"S. Pandey, A. Daley","doi":"10.1080/19439342.2020.1853794","DOIUrl":"https://doi.org/10.1080/19439342.2020.1853794","url":null,"abstract":"ABSTRACT In July 2005, Nepal introduced the ‘Safe Delivery Incentive Programme’, which included free delivery care and supply-side incentives for women in the poorest districts. Using a difference-in-differences model and microdata from the Demographic and Health Surveys, we find the policy increased the probability of prenatal care and neonatal tetanus vaccinations, offsetting disparities between women in the poorest districts and rest of Nepal. Moreover, it was associated with a change in the source of prenatal care, from ‘other’ providers to nurses/midwives. Finally, we find that health investment decisions are interconnected across pregnancy stages; free delivery and supply-side incentives affected prenatal care.","PeriodicalId":46384,"journal":{"name":"Journal of Development Effectiveness","volume":"122 1","pages":"100 - 115"},"PeriodicalIF":0.9,"publicationDate":"2020-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88086430","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 : 2020-11-19DOI: 10.1080/19439342.2020.1829000
F. Brown, A. Farag, Faiza Hussein Abd Alla, K. Radford, Laura Miller, K. Neijenhuijs, H. Stubbé, Thomas de Hoop, Ahmed Abdullatif Abbadi, J. Turner, A. Jetten, M. Jordans
ABSTRACT Innovations are needed to address the global issue of access to high-quality education, particularly in low- and middle-income countries. This paper shows quasi-experimental evidence that a digital game-based learning programme (‘Can’t Wait to Learn’) led to significantly greater improvements in mathematics competency, Arabic literacy competency, and psychological wellbeing of children aged 7–9 in Sudan, compared to state-provided education for out-of-school children, 6 months after the start of the programme implementation (n = 221). These findings were corroborated and extended by qualitative data from 33 focus group discussions and key informant interviews with children, learning directors, caregivers, community leaders, and supervisory staff. We found no difference between groups on child-reported hope, and we found evidence for a significant negative intervention effect on child-reported self-esteem, though the psychometric properties of these instruments were not adequate. We report several considerations related to the experience of local facilitators, programme implementation challenges, and the importance of community acceptance and engagement for fidelity of implementation.
{"title":"Can’t Wait to Learn: A quasi-experimental mixed-methods evaluation of a digital game-based learning programme for out-of-school children in Sudan","authors":"F. Brown, A. Farag, Faiza Hussein Abd Alla, K. Radford, Laura Miller, K. Neijenhuijs, H. Stubbé, Thomas de Hoop, Ahmed Abdullatif Abbadi, J. Turner, A. Jetten, M. Jordans","doi":"10.1080/19439342.2020.1829000","DOIUrl":"https://doi.org/10.1080/19439342.2020.1829000","url":null,"abstract":"ABSTRACT Innovations are needed to address the global issue of access to high-quality education, particularly in low- and middle-income countries. This paper shows quasi-experimental evidence that a digital game-based learning programme (‘Can’t Wait to Learn’) led to significantly greater improvements in mathematics competency, Arabic literacy competency, and psychological wellbeing of children aged 7–9 in Sudan, compared to state-provided education for out-of-school children, 6 months after the start of the programme implementation (n = 221). These findings were corroborated and extended by qualitative data from 33 focus group discussions and key informant interviews with children, learning directors, caregivers, community leaders, and supervisory staff. We found no difference between groups on child-reported hope, and we found evidence for a significant negative intervention effect on child-reported self-esteem, though the psychometric properties of these instruments were not adequate. We report several considerations related to the experience of local facilitators, programme implementation challenges, and the importance of community acceptance and engagement for fidelity of implementation.","PeriodicalId":46384,"journal":{"name":"Journal of Development Effectiveness","volume":"89 1","pages":"320 - 341"},"PeriodicalIF":0.9,"publicationDate":"2020-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80257905","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 : 2020-11-19DOI: 10.1080/19439342.2020.1844782
R. Sabates, P. Rose, B. Alcott, Marcos Delprato
ABSTRACT Cost-effectiveness studies rarely pay explicit attention to whether resources are used effectively to benefit the most marginalised. By linking a quasi-experimental design with detailed financial information, we analyse the cost-effectiveness of the Campaign for Female Education (CAMFED)’s programme in Tanzania. The programme provides targeted, multi-dimensional support to marginalised girls in government secondary schools in deprived rural areas. We find the cost-effectiveness of CAMFED’s programme to be similar to interventions designed for more advantaged populations who are easier (and less costly) to reach. There is further evidence of positive spill-over effects to boys in the schools supported by CAMFED.
{"title":"Assessing cost-effectiveness with equity of a programme targeting marginalised girls in secondary schools in Tanzania","authors":"R. Sabates, P. Rose, B. Alcott, Marcos Delprato","doi":"10.1080/19439342.2020.1844782","DOIUrl":"https://doi.org/10.1080/19439342.2020.1844782","url":null,"abstract":"ABSTRACT Cost-effectiveness studies rarely pay explicit attention to whether resources are used effectively to benefit the most marginalised. By linking a quasi-experimental design with detailed financial information, we analyse the cost-effectiveness of the Campaign for Female Education (CAMFED)’s programme in Tanzania. The programme provides targeted, multi-dimensional support to marginalised girls in government secondary schools in deprived rural areas. We find the cost-effectiveness of CAMFED’s programme to be similar to interventions designed for more advantaged populations who are easier (and less costly) to reach. There is further evidence of positive spill-over effects to boys in the schools supported by CAMFED.","PeriodicalId":46384,"journal":{"name":"Journal of Development Effectiveness","volume":"35 1","pages":"28 - 46"},"PeriodicalIF":0.9,"publicationDate":"2020-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76967593","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 : 2020-10-06DOI: 10.1080/19439342.2020.1829001
C. Okyere
ABSTRACT In 2016-2018 poa! Internet, a private internet service provider, distributed free internet services across schools in Nairobi, Kenya. Using inverse probability weighting (IPW) method, the study finds that the intervention significantly increases students’ internet use and training, receipt of information on educational content, and participation in information and communication technologies (ICTs) education programmes. However, the study does not find evidence that internet services increase school attendance. The results suggest that facilitating access to internet services in schools can significantly increase child computer and internet skills and training in developing countries, even if those investments have limited gains on school attendance.
{"title":"The effect of internet services on child education outcomes: evidence from poa! Internet in Kenya","authors":"C. Okyere","doi":"10.1080/19439342.2020.1829001","DOIUrl":"https://doi.org/10.1080/19439342.2020.1829001","url":null,"abstract":"ABSTRACT In 2016-2018 poa! Internet, a private internet service provider, distributed free internet services across schools in Nairobi, Kenya. Using inverse probability weighting (IPW) method, the study finds that the intervention significantly increases students’ internet use and training, receipt of information on educational content, and participation in information and communication technologies (ICTs) education programmes. However, the study does not find evidence that internet services increase school attendance. The results suggest that facilitating access to internet services in schools can significantly increase child computer and internet skills and training in developing countries, even if those investments have limited gains on school attendance.","PeriodicalId":46384,"journal":{"name":"Journal of Development Effectiveness","volume":"11 1","pages":"4 - 18"},"PeriodicalIF":0.9,"publicationDate":"2020-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88694352","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 : 2020-10-01DOI: 10.1080/19439342.2020.1840421
Anil Kumar Malik, M. d’Errico, D. Omolo, Benjamin Gichane
ABSTRACT Resilience enhancing programmes are key to supporting people facing natural and man-induced shocks. International agencies, donors, NGOs, and governments adopted resilience as a framework for designing interventions. However, there is little evidence of the impact of these programs, especially in a fragile context. This paper evaluates the impact of a joint strategy in Somalia. Results show a positive and significant effect on a resilience construct. This paper contributes also to the literature of impact evaluation by using quasi-experimental (but solid) evidence, and by showing the effect of integrated assistance. This finding suggests investing in a diversified approach to enhance resilience.
{"title":"Building resilience in Somalia; evidence from field data collection","authors":"Anil Kumar Malik, M. d’Errico, D. Omolo, Benjamin Gichane","doi":"10.1080/19439342.2020.1840421","DOIUrl":"https://doi.org/10.1080/19439342.2020.1840421","url":null,"abstract":"ABSTRACT Resilience enhancing programmes are key to supporting people facing natural and man-induced shocks. International agencies, donors, NGOs, and governments adopted resilience as a framework for designing interventions. However, there is little evidence of the impact of these programs, especially in a fragile context. This paper evaluates the impact of a joint strategy in Somalia. Results show a positive and significant effect on a resilience construct. This paper contributes also to the literature of impact evaluation by using quasi-experimental (but solid) evidence, and by showing the effect of integrated assistance. This finding suggests investing in a diversified approach to enhance resilience.","PeriodicalId":46384,"journal":{"name":"Journal of Development Effectiveness","volume":"29 2 1","pages":"323 - 340"},"PeriodicalIF":0.9,"publicationDate":"2020-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75254824","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 : 2020-10-01DOI: 10.1080/19439342.2020.1828999
T. Aizawa
ABSTRACT This study complements the previous evaluation study of the Early Child Stimulation programme conducted in Bangladesh. Despite a rigorously designed randomised control trial, the presence of non-compliers made it impossible to point-identify the average treatment effect (ATE) on targeted outcomes without additional strong identification assumptions. This study provides new evidence through the partial identification approach, which estimates the ATE bound with weak but credible assumptions. The results show that the ATE bounds include the local average treatment effects and we do not find strong evidence to suggest the ATE among compliers is greatly different from that among the entire population.
{"title":"Re-evaluating the early child stimulation programme in Bangladesh: evidence from the partial identification approach","authors":"T. Aizawa","doi":"10.1080/19439342.2020.1828999","DOIUrl":"https://doi.org/10.1080/19439342.2020.1828999","url":null,"abstract":"ABSTRACT This study complements the previous evaluation study of the Early Child Stimulation programme conducted in Bangladesh. Despite a rigorously designed randomised control trial, the presence of non-compliers made it impossible to point-identify the average treatment effect (ATE) on targeted outcomes without additional strong identification assumptions. This study provides new evidence through the partial identification approach, which estimates the ATE bound with weak but credible assumptions. The results show that the ATE bounds include the local average treatment effects and we do not find strong evidence to suggest the ATE among compliers is greatly different from that among the entire population.","PeriodicalId":46384,"journal":{"name":"Journal of Development Effectiveness","volume":"9 1","pages":"298 - 322"},"PeriodicalIF":0.9,"publicationDate":"2020-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77234558","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 : 2020-10-01DOI: 10.1080/19439342.2020.1853792
R. Sabates‐Wheeler, Emily Wylde, I. Aboderin, M. Ulrichs
ABSTRACT There has been minimal consideration of the implications of demographic and social shifts for future old-age social protection needs and programming in sub-Saharan Africa. In this paper we address this gap, building on the example of Rwanda. We utilise mixed-methods research to show that aggregate national statistics mask many of the complex vulnerabilities that older people face. These, combined with our projections of changes in Rwanda’s economy, suggest an expanding unmet need for social protection among Rwanda’s older population. A universal social pension is one affordable way to respond to this gap in provision both now and in the future.
{"title":"The implications of demographic change and ageing for social protection in sub-Saharan Africa: insights from Rwanda","authors":"R. Sabates‐Wheeler, Emily Wylde, I. Aboderin, M. Ulrichs","doi":"10.1080/19439342.2020.1853792","DOIUrl":"https://doi.org/10.1080/19439342.2020.1853792","url":null,"abstract":"ABSTRACT There has been minimal consideration of the implications of demographic and social shifts for future old-age social protection needs and programming in sub-Saharan Africa. In this paper we address this gap, building on the example of Rwanda. We utilise mixed-methods research to show that aggregate national statistics mask many of the complex vulnerabilities that older people face. These, combined with our projections of changes in Rwanda’s economy, suggest an expanding unmet need for social protection among Rwanda’s older population. A universal social pension is one affordable way to respond to this gap in provision both now and in the future.","PeriodicalId":46384,"journal":{"name":"Journal of Development Effectiveness","volume":"4 1","pages":"341 - 360"},"PeriodicalIF":0.9,"publicationDate":"2020-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87993081","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 : 2020-10-01DOI: 10.1080/19439342.2020.1828998
Thomas de Hoop, Shelby Fallon, F. Yunus, S. Munrat, S. Jolly, Farzana Sehrin, B. Aktar, Ruhina Binta A Ghani, Joshua Sennett
ABSTRACT BRAC Bangladesh trains community health workers to communicate about nutrition in its Maternal, Newborn and Child Health programme. We estimate the programme’s impact on nutrition outcomes among rural Bangladeshi children of two years and younger. We find positive effects on dietary diversity, and show that the programme reduces stunting with 7 percentage points using data from 1600 households in 40 beneficiary mouzas and 40 comparison mouzas. We find larger effects for households where primary caregivers have finished primary school. We did not find effects on wasting, which in contrast to stunting is higher among children with primary caregivers without education.
{"title":"Mothers’ education and the effectiveness of nutrition programmes: evidence from a matched cross-sectional study in rural Bangladesh","authors":"Thomas de Hoop, Shelby Fallon, F. Yunus, S. Munrat, S. Jolly, Farzana Sehrin, B. Aktar, Ruhina Binta A Ghani, Joshua Sennett","doi":"10.1080/19439342.2020.1828998","DOIUrl":"https://doi.org/10.1080/19439342.2020.1828998","url":null,"abstract":"ABSTRACT BRAC Bangladesh trains community health workers to communicate about nutrition in its Maternal, Newborn and Child Health programme. We estimate the programme’s impact on nutrition outcomes among rural Bangladeshi children of two years and younger. We find positive effects on dietary diversity, and show that the programme reduces stunting with 7 percentage points using data from 1600 households in 40 beneficiary mouzas and 40 comparison mouzas. We find larger effects for households where primary caregivers have finished primary school. We did not find effects on wasting, which in contrast to stunting is higher among children with primary caregivers without education.","PeriodicalId":46384,"journal":{"name":"Journal of Development Effectiveness","volume":"40 1","pages":"279 - 297"},"PeriodicalIF":0.9,"publicationDate":"2020-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82473886","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 : 2020-09-01DOI: 10.1080/19439342.2021.1968934
M. J. Roa, Alejandra Villegas, Ignacio Garrón
ABSTRACT This paper evaluates the imposition of caps on microcredit lending rates through credit policies for productive sectors. This financial inclusion intervention provides a unique quasi-experiment, allowing to estimate its effect following a difference-in-differences analysis. Our results suggest that the imposition of interest rate ceilings negatively affected the portfolio balance of new microcredits and loans to Small and Medium Enterprises (SMEs) granted by Micro Finance Institutions (MFIs). The balance of the microcredit and SME loans portfolio granted by MFIs, relative to the company portfolio granted by banks, decreased by 26.1% for an average MFI for the period 2011-2018.
{"title":"Interest rate caps on microcredit: evidence from a natural experiment in Bolivia","authors":"M. J. Roa, Alejandra Villegas, Ignacio Garrón","doi":"10.1080/19439342.2021.1968934","DOIUrl":"https://doi.org/10.1080/19439342.2021.1968934","url":null,"abstract":"ABSTRACT This paper evaluates the imposition of caps on microcredit lending rates through credit policies for productive sectors. This financial inclusion intervention provides a unique quasi-experiment, allowing to estimate its effect following a difference-in-differences analysis. Our results suggest that the imposition of interest rate ceilings negatively affected the portfolio balance of new microcredits and loans to Small and Medium Enterprises (SMEs) granted by Micro Finance Institutions (MFIs). The balance of the microcredit and SME loans portfolio granted by MFIs, relative to the company portfolio granted by banks, decreased by 26.1% for an average MFI for the period 2011-2018.","PeriodicalId":46384,"journal":{"name":"Journal of Development Effectiveness","volume":"7 1","pages":"125 - 142"},"PeriodicalIF":0.9,"publicationDate":"2020-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74055271","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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