Wang, Zhicong
Chen, Xi
Chen, Yan
Yang, Ling
Wang, Hong
Jiang, Wei
Liu, Shuping
Liu, Yuehong
Article History
Received: 7 July 2021
Accepted: 26 November 2021
First Online: 7 December 2021
Declarations
:
: The study protocol was approved by the Institutional Ethics Committee at Deyang People’s Hospital (IRD number 2021–04-019-K01). Permission to waive the informed consent was obtained from the institutional review board for this observational retrospective study. This study was performed in accordance with the ethical standards in the 1964 Declaration of Helsinki.
: Not applicable.
: The authors declare that they have no competing interests.