Chu, Chen
Wang, Fengxian
Zhang, Huayong
Zhu, Yun
Wang, Chun
Chen, Weibo
He, Jian
Sun, Lingyun
Zhou, Zhengyang
Funding for this research was provided by:
National Health and Family Planning Commission of the People's Republic of China (W201306)
Natural Science Foundation of Jiangsu Province (BK20171118)
Article History
Received: 5 March 2018
Accepted: 7 October 2018
First Online: 18 October 2018
Competing Interests
: The authors declare no competing interests.