Xie, Xiaowei
Zhao, Jingan
Xie, Lixin
Wang, Haiyan
Xiao, Yan
She, Yingjia
Ma, Lingyun
Article History
Received: 26 August 2018
Accepted: 4 February 2019
First Online: 15 February 2019
Ethics approval and consent to participate
: This study was approved by the ethical committee of Chinese PLA General Hospital.
: Not applicable.
: The authors declare that they have no competing interests.
: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.