Liao, Conggang
Ren, Qiang
Chu, Lei
Shi, Lei
Yu, Qingshuai
Yan, Zhenjian
Yu, Kexiao
Liu, Chao
Wu, Wenkai
Xiong, Yang
Deng, Zhongliang http://orcid.org/0000-0001-5330-3062
Chen, Liang
Funding for this research was provided by:
Health and Family Planning Commission of Chongqing (2015XMSB63)
Science and Technology Research Projects of Chongqing Education Commission (cstc2015jcyjA10087)
Article History
Received: 30 October 2017
Revised: 14 January 2018
Accepted: 14 February 2018
First Online: 24 February 2018
Compliance with ethical standards
:
: The authors declare no conflicts of interest in this study.