Xu, Maolin
Zhao, Zhiming
Jia, Baoqing
Liu, Rong
Liu, Hongyi
Article History
Received: 11 June 2020
Accepted: 21 December 2020
First Online: 4 January 2021
Compliance with ethical standards
:
: None.
: This project was approved by the Ethics Committee of the Chinese PLA General Hospital.
: For this type of study, formal consent is not required.