Yang, Junyang
Tang, Qi
Qi, Tangkai
Chen, Jun
Ji, Yongjia
Tang, Yang
Wang, Zhenyan
Song, Wei
Xun, Jingna
Liu, Li
Shen, Yinzhong
Zhang, Renfang
Lu, Hongzhou
Funding for this research was provided by:
Shanghai Municipal Commission of Health and Family Planning
Article History
Received: 27 March 2018
Accepted: 6 October 2018
First Online: 23 October 2018
Competing Interests
: The authors declare no competing interests.