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Market structure and bank performance: A comprehensive picture of Vietnam 市场结构与银行业绩:越南全貌
Banks and Bank Systems Pub Date : 2023-08-11 DOI: 10.21511/bbs.18(3).2023.07
Thi Mai Phuong Duong, Van Dan Dang
{"title":"Market structure and bank performance: A comprehensive picture of Vietnam","authors":"Thi Mai Phuong Duong, Van Dan Dang","doi":"10.21511/bbs.18(3).2023.07","DOIUrl":"https://doi.org/10.21511/bbs.18(3).2023.07","url":null,"abstract":"In the context of the fact that the structure of the Vietnamese banking market has undergone many fluctuations, which has had an impact on banking activities, and the fact that many related studies have been carried out, but the answer is still limited and inconsistent, it is necessary to study the impact of the market structure on banking operations in Vietnam. The paper comprehensively examines the impact of market structure on various aspects of bank performance in Vietnam. The study uses three measures of the structure of the banking industry, namely, the total market share of the largest banks, the squared market share of all banks according to the Herfindahl-Hirshchman index, and the Lerner index on market power (inverse bank competition), to ensure the results are not dependent on any specific measure. The paper applies the two-step system generalized method of moments estimator to conduct regression analysis for a sample of 30 banks from 2007 to 2021. All obtained estimates generally show positive effects on bank performance due to greater market power and higher banking concentration. Concretely, more market power and greater concentration improve bank asset quality, management efficiency, bank profitability, and lending capacity. Overall, the findings of this paper all support the bright side of less competition and more concentration, which is essential to derive policy implications related to supervising competitive environments and stimulating consolidated financial systems.\u0000AcknowledgmentThis study is part of Thi Mai Phuong Duong’s PhD dissertation at the Ho Chi Minh University of Banking under the supervision of Van Dan Dang.","PeriodicalId":53480,"journal":{"name":"Banks and Bank Systems","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48259980","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
From conventional to Islamic banks: Factors affecting customer interests and decision making in selecting banks 从传统银行到伊斯兰银行:影响客户利益和选择银行决策的因素
Banks and Bank Systems Pub Date : 2023-08-11 DOI: 10.21511/bbs.18(3).2023.06
Darmono Indonesia H. M. Muhdar, Andi Mardiana, R. Muin, Rizal Darwis, cus-© H. M. Muhdar, Andi Darmono, Rahmawati Mardiana, Rizal Muin, Darwis, Ph. Darmono, Ph. Rahmawati Muin
{"title":"From conventional to Islamic banks: Factors affecting customer interests and decision making in selecting banks","authors":"Darmono Indonesia H. M. Muhdar, Andi Mardiana, R. Muin, Rizal Darwis, cus-© H. M. Muhdar, Andi Darmono, Rahmawati Mardiana, Rizal Muin, Darwis, Ph. Darmono, Ph. Rahmawati Muin","doi":"10.21511/bbs.18(3).2023.06","DOIUrl":"https://doi.org/10.21511/bbs.18(3).2023.06","url":null,"abstract":"The phenomenon of increasing customers of take-over financing from conventional banks to Islamic banks is an interesting trend to study. This research purpose is to investigate the influence of murabahah financing margins, customer religiosity to customer interest and decision making. The method used is a sequential mixed method. The instrument quantitative is a questionnaire, and the qualitative method is an interview. 199 pensioner customers participated in the survey. Internal consistency is measured by Cronbach’s alpha value. The accuracy of the structural equation modeling (SEM) and hypothesis testing was evaluated using AMOS version 23. The research findings indicate, there was a significant influence between customer religiosity on customer interest and customer interest on decision making. Meanwhile, the murabahah financing margin has no significant influence on customer interest and decision making, as well as between customer religiosity and decision making. Murabahah financing margins and customer religiosity have an influence of significance when mediated by the variable of customer interest. In conclusion, Murabahah financing margin, and customer religiosity does not have a direct significant influence on decision making without being mediated by the variable of customer interest. These results indicate that Islamic bank managers can take advantage of this research variable to increase customer interest so that customer decision making also increases. This study has practical implications for conventional banks and sharia banks. Sharia banks are an opportunity to attract customers from conventional banks, while conventional banks are a challenge because their customers have the potential to take over Islamic banks.\u0000AcknowledgmentsThe authors are grateful to the Rector of the State Islamic Institute of Sultan Amai Gorontalo, and the State Islamic University of Alauddin Makassar for funding this research collaboratively, and to the respondents who have taken the time to fill out the research questionnaire so that research data can be collected.","PeriodicalId":53480,"journal":{"name":"Banks and Bank Systems","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43442725","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A meta-analysis of determinants influencing bank employees’ satisfaction 银行员工满意度影响因素的元分析
Banks and Bank Systems Pub Date : 2023-08-10 DOI: 10.21511/bbs.18(3).2023.05
Nuttaprachya Nantavisit, Long Kim, Udom Dorn
{"title":"A meta-analysis of determinants influencing bank employees’ satisfaction","authors":"Nuttaprachya Nantavisit, Long Kim, Udom Dorn","doi":"10.21511/bbs.18(3).2023.05","DOIUrl":"https://doi.org/10.21511/bbs.18(3).2023.05","url":null,"abstract":"Job satisfaction is an important factor in the success of any organization, and the banking industry is no exception. This study conducted a meta-analysis of 34 empirical studies to identify the key factors that influence job satisfaction among bank employees. The results showed that seven factors were most frequently cited as important: leadership, intrinsic motivation, reward, organizational commitment, work ethic, HRM activities, and working conditions. These factors were all found to have a positive impact on job satisfaction, with leadership having the strongest effect. The meta-analysis also found that the effect sizes of these factors were relatively large, indicating that they have a significant impact on job satisfaction. This suggests that banks can improve job satisfaction among their employees by focusing on these factors. For example, banks can provide employees with strong leadership, offer competitive rewards, and create a positive work environment. By doing so, banks can boost employee morale and productivity, which can lead to improved customer service and financial performance.","PeriodicalId":53480,"journal":{"name":"Banks and Bank Systems","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44247603","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The impact of income diversification on the stability of listed Jordanian commercial banks during the COVID-19 pandemic 新冠肺炎疫情期间收入多元化对约旦上市商业银行稳定性的影响
Banks and Bank Systems Pub Date : 2023-08-10 DOI: 10.21511/bbs.18(3).2023.04
Abdallah Khaled Al-Habashneh, Ibrahim Naser Khatatbeh, Khaled Mohammed Alzubi
{"title":"The impact of income diversification on the stability of listed Jordanian commercial banks during the COVID-19 pandemic","authors":"Abdallah Khaled Al-Habashneh, Ibrahim Naser Khatatbeh, Khaled Mohammed Alzubi","doi":"10.21511/bbs.18(3).2023.04","DOIUrl":"https://doi.org/10.21511/bbs.18(3).2023.04","url":null,"abstract":"This study investigates the impact of the COVID-19 pandemic on the relationship between income diversification and bank stability among Jordanian commercial banks listed on the Amman Stock Exchange (ASE), using a panel Autoregressive Distributed-Lagged Model (panel-ARDL) and quarterly data from 2015 to 2021. The findings demonstrate that during the COVID-19 period, a higher proportion of non-interest income, resulting from income diversification, enhances bank stability. However, considering the entire sample period, the results suggest a potential deterioration in bank stability when banks diversify towards non-interest income, aligning with the negative effect observed in the literature. Additionally, the study identifies factors such as bank size, liquidity, loan loss provisions, cost efficiency, and the deposit ratio, which influence bank stability. These findings hold significant implications for policymakers and banks in developing countries concerned about the impact of income diversification on bank stability. They also offer valuable insights to understanding the dynamics of income diversification and its implications for bank stability in the context of the COVID-19 pandemic.","PeriodicalId":53480,"journal":{"name":"Banks and Bank Systems","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41489165","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Credit risk management and profitability: Evidence from Palestinian banks 信贷风险管理和盈利能力:来自巴勒斯坦银行的证据
Banks and Bank Systems Pub Date : 2023-08-08 DOI: 10.21511/bbs.18(3).2023.03
Besan Abdallah Saleh, Veronica Paz
{"title":"Credit risk management and profitability: Evidence from Palestinian banks","authors":"Besan Abdallah Saleh, Veronica Paz","doi":"10.21511/bbs.18(3).2023.03","DOIUrl":"https://doi.org/10.21511/bbs.18(3).2023.03","url":null,"abstract":"Credit risk has gained considerable attention in most countries of the world intending to manage the efficiency of credit portfolios. This study attempts to examine the impact of credit risk management on bank profitability. The local Bank of Palestine provided secondary data over a ten-year period (2010–2020) collected from financial annual reports. The statistical analysis is carried out using the SPSS and E-views software, and the study hypotheses are verified using descriptive statistics, multicollinearity tests, and regression. Palestinian banks’ profitability was evaluated using return on assets, along with bank-specific metrics such as capital adequacy ratio (CAR), loan-to-deposit ratio (LDR), non-performing loans (NPLs), loan loss provision ratio (LLPR), bank size, and bank age, as signs of credit risk management. The study’s findings indicate that there are differences in how credit risk management affects bank profitability in the context of Palestine. CAR NPLs have a positive but insignificant effect on profitability using ROA. The regression found a significant positive effect of LLPR on profitability using ROA. Finally, with respect to LDR as an indicator of credit risk management, the regression found its negative but insignificant effect on profitability using ROA. The results demonstrate how the board’s structure influences the performance of a company, which is regarded important knowledge for decision makers.","PeriodicalId":53480,"journal":{"name":"Banks and Bank Systems","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44832606","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Earnings and market ratio: Additional evidence from Jordanian banks 收益和市场比率:来自约旦银行的额外证据
Banks and Bank Systems Pub Date : 2023-07-10 DOI: 10.21511/bbs.18(3).2023.02
Mohammad Fawzi Shubita
{"title":"Earnings and market ratio: Additional evidence from Jordanian banks","authors":"Mohammad Fawzi Shubita","doi":"10.21511/bbs.18(3).2023.02","DOIUrl":"https://doi.org/10.21511/bbs.18(3).2023.02","url":null,"abstract":"The primary objective of this study is to investigate the correlation between profitability and the banks market value, while controlling for bank size as indicated by total assets. Two main models are analyzed, namely the benchmark model and the main model, to estimate the impact of high and low profitability on market value. The sample for this study consists of Jordanian banks covering the period from 2010 to 2020. The study results reveal that banks with high profitability exhibit a higher market value compared to those with low profitability, underscoring the crucial role of profitability as a determinant of bank value. Furthermore, the study establishes a link between low and high ROE and market value, indicating that variations in ROE significantly affect market value. Moreover, the study demonstrates a positive link between earnings and market value, emphasizing the significance of bank earnings in influencing market value. Lastly, the study emphasizes the role of bank size in shaping the link between ROE and market value, highlighting the importance of considering bank size when examining the link between profitability and market value.\u0000AcknowledgmentI thank Amman Arab University for funding this research.","PeriodicalId":53480,"journal":{"name":"Banks and Bank Systems","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42430929","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
QR-code-based payment. Does the consumer intend to adopt a retail buying transaction? 基于二维码的支付。消费者是否打算采用零售购买交易?
Banks and Bank Systems Pub Date : 2023-06-30 DOI: 10.21511/bbs.18(3).2023.01
W. Widayat, Marsudi, I. Masudin
{"title":"QR-code-based payment. Does the consumer intend to adopt a retail buying transaction?","authors":"W. Widayat, Marsudi, I. Masudin","doi":"10.21511/bbs.18(3).2023.01","DOIUrl":"https://doi.org/10.21511/bbs.18(3).2023.01","url":null,"abstract":"The Quick Response (QR) code payment is a relatively new means of payment in Indonesia. Even though this strategy offers a great deal of use, not many people are familiar with it or use it. In this regard, it is fascinating to look at what makes people use the QR Code payment method. The quantitative study used a five-point Likert scale questionnaire to sample e-money users through social media groups. In addition, structural Equation Modeling (SEM), employee Smart-PLS 3.0, was used to examine the data. The results show that social factors affect how people feel about QR code payments, and facilitating support and performance expectations affect how likely they are to use it. Also, attitudes, a mediator of social impact, can change the effect of support performance expectations on adoption intentions. Because of this, people accepting QR code-based payments take a positive attitude. Also, the facilities and environment affected a positive attitude, expected performance, ease of operation, and social interactions. Based on the results, the recommendation for financial institutions and innovation is that the facility and social environment are critical to the success of financial innovation. So, if more people want to use QR code-based payments, financial institutions need to make it easy for them.\u0000AcknowledgmentThe author would like to thank the Rector, Vice-Rector of the University of Muhammadiyah Malang. Furthermore, the author sincerely thanks the University of Muhammadiyah Malang’s Dean of Business and Economics Faculty. A University of Muhammadiyah Malang’s School of Economics and Business member supported finishing this paper.","PeriodicalId":53480,"journal":{"name":"Banks and Bank Systems","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45016990","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Does transitioning away from GHG emitting companies hinder the capacity of banks to create shareholder value? 从温室气体排放企业转型是否会阻碍银行创造股东价值的能力?
Banks and Bank Systems Pub Date : 2023-06-22 DOI: 10.21511/bbs.18(2).2023.19
Chekani Nkwaira, Huibrecht Margaretha van der Poll
{"title":"Does transitioning away from GHG emitting companies hinder the capacity of banks to create shareholder value?","authors":"Chekani Nkwaira, Huibrecht Margaretha van der Poll","doi":"10.21511/bbs.18(2).2023.19","DOIUrl":"https://doi.org/10.21511/bbs.18(2).2023.19","url":null,"abstract":"This article investigates the capacity of banks to create shareholder value amidst regulators and stakeholders’ growing demands for reductions in financing to greenhouse gas emitting companies. The purpose of the study is to evaluate the shareholder value creation capacity of banks amidst transition risks resulting from reductions in loans from high greenhouse gas emitters. The study compares reductions in balance sheet corporate loans to returns on equity from income statements. The comparison is done for periods during which interest rates move downwards as a way of stress testing banks’ capabilities to generate shareholder value. A risk-return analysis is conducted to determine the rate of change in risk compared to shareholder value. A hypothesis-testing focus is used to test a value-creation proposition concerning the rate of change in corporate loans and return on equity. The results of the study strongly suggest that banks can create shareholder value when faced with loan reductions to high greenhouse gas emitting companies, even within constrained repricing conditions such as negative interest rate movements. Of the cases analyzed 88% have a similar outcome of value creation, which is supported by a rejection of the null hypothesis at p-value ≤ 0.05, justifying statistical significance. Furthermore, 53% of the changes in return on equity is explained by the changes in loans to greenhouse gas emitting companies. The study concludes that banks could still create shareholder value if they reduce funding towards high greenhouse gas emitting companies, provided they devise prudent strategic portfolio tilts in assets.","PeriodicalId":53480,"journal":{"name":"Banks and Bank Systems","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68557939","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Banking resilience and government response during the COVID-19 pandemic: Evidence from Nigeria 新冠肺炎大流行期间的银行弹性和政府应对措施:来自尼日利亚的证据
Banks and Bank Systems Pub Date : 2023-06-14 DOI: 10.21511/bbs.18(2).2023.18
Taofeek Sola Afolabi, Thomas Duro Ayodele, Oyinlola Morounfoluwa Akinyede, Olanrewaju David Adeyanju, Harley Tega Williams
{"title":"Banking resilience and government response during the COVID-19 pandemic: Evidence from Nigeria","authors":"Taofeek Sola Afolabi, Thomas Duro Ayodele, Oyinlola Morounfoluwa Akinyede, Olanrewaju David Adeyanju, Harley Tega Williams","doi":"10.21511/bbs.18(2).2023.18","DOIUrl":"https://doi.org/10.21511/bbs.18(2).2023.18","url":null,"abstract":"In a global pandemic, there is a need for banks to improve service delivery through financial technologies. Since the fight against COVID-19 is the community responsibility, the role of banks in channeling cash to all stakeholders is essential for the contemporary human race. This study investigated the impact of the government response to COVID-19 on the resilience of banks. A multivariate Structural Equation Model (SEM) was used to specify the links between the exogenous factors (government’s social and financial responses) and the endogenous variables (resilience of bank customers, employees and investors). A research survey approach was used where 543 respondents were sampled. A self-constructed online questionnaire was used to harvest responses from customers, employees and investors of the selected banks. The result of the analysis showed a significant relationship between government’s social response and the resilience of bank customers. However, such a relationship does not hold between government’s social responses and other resilience indicators (employees and investors). Furthermore, the result revealed that government’s financial responses do not affect the resilience of banks. The study concluded that the government’s social response during the COVID-19 pandemic influenced bank customers’ resilience in Nigeria. It was recommended that banks, as part of the policy, develop tools to complement government actions during the pandemic, thereby ameliorating its impact on their customers.\u0000AcknowledgmentThe authors will like to acknowledge all respondents who took part in the survey.","PeriodicalId":53480,"journal":{"name":"Banks and Bank Systems","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47356169","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Demand trade-off between PLSs and markups in the presence of a conventional banking relationship: The case of Moroccan companies 在存在传统银行关系的情况下,pls和加价之间的需求权衡:摩洛哥公司的案例
Banks and Bank Systems Pub Date : 2023-06-12 DOI: 10.21511/bbs.18(2).2023.16
Mustapha Ziky, Nabil El Hamidi
{"title":"Demand trade-off between PLSs and markups in the presence of a conventional banking relationship: The case of Moroccan companies","authors":"Mustapha Ziky, Nabil El Hamidi","doi":"10.21511/bbs.18(2).2023.16","DOIUrl":"https://doi.org/10.21511/bbs.18(2).2023.16","url":null,"abstract":"Theoretical explanations based on information asymmetry constitute the dominant paradigm of the near disappearance of PLSs (profit and loss sharing). This assumption implicitly implies a hypothesis on the power of contractual choice exclusively monopolized by Islamic banks. The theoretical positioning in this study to explain the arbitrage between PLSs and markups is based on a lack of demand. In this sense, this paper attempts to verify the demand trade-off of Moroccan companies between PLSs and markups. A logistic regression was used to establish several findings. The evidence suggests that past banking relationships with conventional banks and debt maturity both favor the commercialization of markups. On the other hand, financial quality of firms has no direct impact on the choice between PLSs and markups. This assertion implies that it is incorrect to assume that sole entrepreneurs undertaking high-risk projects choose to be funded by PLSs. Combining that with the fact that companies that agree to be funded by PLSs agree to share profits, private information and decision-making power, it can be said that PLSs can have a good chance of thriving in Morocco if Islamic banks provide a favorable climate for their marketing.","PeriodicalId":53480,"journal":{"name":"Banks and Bank Systems","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41765730","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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