Zhang, Lei
Zou, Lei
Sun, Peng
Article History
Received: 11 November 2020
Accepted: 18 March 2021
First Online: 1 April 2021
Declarations
:
: This study was carried out in accordance with the Declaration of Helsinki and ratified by the Medical Ethics Committee of Zibo Central Hospital (2012,ZCH-2012-0034).
: Not applicable.
: The authors declare that they have no competing interests.