Du, Juan
Ma, Yan
Lang, Hongmei
Huang, Changquan
Zhang, Xingping
Article History
Received: 6 May 2022
Accepted: 26 July 2022
First Online: 8 August 2022
Declarations
:
: The study protocol was approved by the Ethics Committee of Chengdu Second People's Hospital (No: 2022144) and the requirement for informed consent was waived because of the retrospective nature of the study. All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional research committee and with the Helsinki declaration and its later amendments or comparable ethical standards.
: All the authors consented for publication.
: The authors declare no competing interests.