Yang, Lei
Yu, Ling
Kong, Youqi
Zhang, Xiaoyu
Li, Yue
Yang, Shuna
Gu, Hua
Gao, Shan
Hu, Wenli
Article History
Received: 15 November 2019
Accepted: 4 April 2020
First Online: 16 May 2020
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: The design of this study was approved by the Ethics Committee of Beijing Chao-Yang Hospital, Capital Medical University.