Funding for this research was provided by:
Whitney and Betty MacMillan Center for International and Area Studies
Claude D. Pepper Older Americans Independence Center (P30AG021342)
National Institutes of Health (K01AG053408, R03AG048920)
Greg and Cindy Page Faculty Distribution Fund
Postdoctoral Research Foundation of China (2017M620653 and 2018T110057)
Article History
Received: 21 November 2018
Accepted: 31 January 2020
First Online: 4 March 2020
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.