Liu, Qiang http://orcid.org/0000-0002-3744-1024
Ling, Guan-jun
Zhang, Shao-quan
Zhai, Wen-qing
Chen, Yi-juan
Funding for this research was provided by:
2018 Guangxi Zhuang Autonomous Region health and family planning committee project (Z20180127)
Article History
Received: 16 April 2020
Accepted: 16 October 2020
First Online: 30 October 2020
Ethics approval and consent to participate
: Not applicable.
: Not applicable.
: Not applicable.