Funding for this research was provided by:
Carolina Population Center, University of North Carolina at Chapel Hill (5R24 HD050924)
National Institutes of Health (R01-HD30880, DK056350, R24 HD050924 and R01-HD38700)
Fogarty International Center (5D43TW007709 and 5D43TW009077)
Received: 16 July 2019
Accepted: 28 February 2020
First Online: 20 March 2020
Change Date: 25 May 2020
Change Type: Correction
Change Details: An amendment to this paper has been published and can be accessed via the original article.
Ethics approval and consent to participate
: The institutional review board of the University of North Carolina at Chapel Hill and the National Institute for Nutrition and Health, Chinese Center for Disease Control and Prevention approved the study protocol (ethics approval code 201524). All of the participants signed the informed consents.
: Not applicable.
: The authors declare that they have no competing interests.