Zheng, Wei
Hou, Guanhua
Li, Yong
Article History
Received: 31 January 2021
Accepted: 31 March 2021
First Online: 13 April 2021
Declarations
:
: Our research was approved by the Ethics Committee of Rizhao Central Hospital.
: Informed consent was obtained from all patients.
: The authors declare that they have no competing interests.