Article History
Received: 20 October 2020
Accepted: 26 March 2021
First Online: 23 April 2021
Declarations
:
: Xuesong Yang, Jiao Qin, Chunyu Gong and Jing Yang declare that they have no conflict of interest.
: This study had been approved by Affiliated hospital of north sichuan medical college. No human or animal was involved in the study.
: Informed consent was obtained from all individual participants included in the study.