Guan, Jian
Chen, Zan
Wu, Hao
Yao, Qingyu
Wang, Qu
Zhang, Can
Qi, Tengfei
Wang, Kai
Duan, Wanru
Gao, Jun
Li, Yongning
Jian, Fengzeng
Funding for this research was provided by:
Innovative plan of Beijing Hospital Authority (PX2017002)
General project of Beijing Natural Science Foundation (7172091)
Capital developmental innovation project of Beijing Municipal Commission of Health and Family Planning (SHOUFA-2018-2-2014)
Article History
Received: 25 April 2018
Accepted: 21 December 2018
First Online: 2 January 2019
Compliance with ethical standards
:
: The authors report no conflict of interest concerning the materials or methods used in this study or the findings specified in this paper.