Zhao, Sihui
Ning, Yunfang
Qin, Na
Ping, Nan
Yu, Yong
Yin, Guoyan
Article History
Received: 12 November 2020
Accepted: 26 March 2021
First Online: 17 April 2021
Declarations
:
: Sihui Zhao, Yunfang Ning, Na Qin, Nan Ping, Yong Yu and Guoyan Yin declare that they have no conflict of interest.
: The research has been complied with all the relevant national regulations, institutional policies and in accordance the tenets of the Helsinki Declaration, and has been approved by the Ethics Committee of Heping Hospital Affiliated to Changzhi Medical College.