Li, Xu
Ding, Lang
Li, Xue
Zhu, He
Gashash, Ebtesam A.
Li, Zhanguo
Wang, Peng George
Ma, Cheng
Article History
Received: 24 July 2018
Revised: 6 November 2018
Accepted: 10 December 2018
First Online: 7 February 2019
Compliance with ethical standards
: The study was approved by the Ethics Committee of Peking University People’s Hospital (Approval No. 2015 PHB 219-01). All participants of this study provided informed consent for participation in this study.
: The authors declare that they have no conflicts of interest.