Shi, Man-man
Wang, Jian-li
Zhang, Li-qiang
Qin, Mei
Huang, Yong-wei
Article History
Received: 2 September 2019
Revised: 20 November 2019
Accepted: 5 December 2019
First Online: 18 December 2019
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: This study was approved by the ethics committees at our hospital.
: Written informed consent was obtained from all subjects prior to their enrolment in the study.