Guo, Hong-tao
Bi, Xue-han
Lei, Ting
Lv, Xiao
Yao, Guang
Chen, Yao
Liu, Chang
Article History
Received: 14 December 2019
Accepted: 4 May 2020
First Online: 19 May 2020
Ethics approval and consent to participate
: This research was approved by the First Hospital of Lanzhou University, and written informed consent was obtained from every patient included in the study.
: Not applicable.
: The authors have no potential conflicts of interest to disclose.