Liu, Xiangyu
Hong, Lou
Peng, Wenjuan
Jiang, Jun
Peng, Zhe
Yang, Jianwen http://orcid.org/0000-0003-2680-1781
Funding for this research was provided by:
Health and Family Planning Commission of Hunan Province (20180419)
Article History
Received: 28 January 2019
Accepted: 12 March 2019
First Online: 4 April 2019
Compliance with Ethical Standards
:
: The authors declare that they have no conflict of interest.