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Authors
Wei, Ning
Zhou, Lü-lin https://orcid.org/0000-0001-7552-3912
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Funding
Funding for this research was provided by:
The Ministry of education of Humanities and Social Science project (17YJC840041)
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Article History
Received: 8 October 2018
Accepted: 18 November 2019
First Online: 5 December 2019
Compliance with Ethical Standards
: The authors state to comply with Ethical Standards of the Journal of Population Ageing.
: There are no potential conflicts of interest as far as the authors can see. The research involved no Human Participants. We used an existing dataset. The datasets supporting the conclusions of this article are available in the CHARLS website [].
