Shi, Hong
Zhang, Xiumin http://orcid.org/0000-0002-2939-765X
Li, Xiangrong
Ren, Zheng
Zhao, Hanfang
He, Minfu
Fan, Xinwen
Guo, Xia
Zha, Shuang
Qiao, Shuyin
Li, Yuyu
Pu, Yajiao
Liu, Hongjian
Funding for this research was provided by:
Science and Technology Department of Jilin Province, China (20200101133FG)
Article History
Received: 15 January 2021
Accepted: 12 March 2021
First Online: 24 March 2021
Declarations
:
: The 2017 China Migrants Dynamic Survey was approved by the China National Bureau of Statistics [No. NBS (2015)72], and written informed consent was obtained from all participants at the time of data collection. Use of the data for this study was approved by the Migrant Population Service Center, National Health Commission of China. As this study was a secondary analysis of de-identified data collected by the government, ethics approval has been exempted. All procedures performed in studies involving human participants were in accordance with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards.
: Not applicable.
: The authors declare that they have no competing interest.