Zhang, Hao
Zhang, Qiang
Li, Zhong-Li
Article History
Received: 23 January 2018
Revised: 21 July 2018
Accepted: 30 July 2018
First Online: 29 August 2018
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: This retrospective study protocol was approved by institutional review board (IRB) of General Hospital of People’s Liberation Army, and written informed consents were obtained from all study participants.