Li, Yong-Li
Huang, Hui-Fan
Le, Yuan
Article History
Received: 16 February 2021
Accepted: 17 June 2021
First Online: 19 July 2021
Declarations
:
: The present study was approved by the Ethics Committee of the Third Xiangya Hospital (ID:21011). All methods were performed in accordance with the 1964 Helsinki declaration and its later amendments or comparable ethical standards. Because of retrospective study, informed consent was waived by the Ethics Committee of the Third Xiangya Hospital.
: Not applicable.
: The authors declare that they have no competing interests.