Tong, Lian
Kawachi, Ichiro
Funding for this research was provided by:
Shanghai Municipal Health Bureau (15GWZK0402)
Article History
Received: 19 February 2019
Accepted: 22 September 2020
First Online: 29 September 2020
Ethics approval and consent to participate
: The “National Internal Migrant Dynamic Monitoring Survey, 2014” data is publicly available to authorized researchers who have been given permission by the National Population and Family Planning Commission, and written informed consents were obtained from all participants. The analysis of public-access data was exempted by the local IRB; as this involved analyzing de-identified existing data, ethical approval was not required.
: Not Applicable.
: The authors declare that they have no competing interests.