Li, Huixia
Zheng, Jianfei
Wang, Hua
Huang, Guangwen
Huang, Qun
Feng, Na
Xiao, Juan
Funding for this research was provided by:
National Center for Women and Children's Health, China CDC
Article History
Received: 23 May 2018
Accepted: 20 May 2019
First Online: 29 May 2019
Competing Interests
: The authors declare no competing interests.