Li, Dong-Xiao
Li, Xi-Yuan
Dong, Hui
Liu, Yu-Peng
Ding, Yuan
Song, Jin-Qing
Jin, Ying
Zhang, Yao
Wang, Qiao
Yang, Yan-Ling
Article History
Received: 2 February 2017
Accepted: 5 March 2017
First Online: 5 March 2018
Compliance with ethical standards
:
: This study was approved by the Ethics Committee of Peking University First Hospital.
: The authors declared that they have no conflict of interest.