Received: 18 December 2020
Accepted: 23 March 2021
First Online: 1 April 2021
: Approval for the study was obtained from the Wenzhou people’s Hospital Ethics Review Committee [approval no. WRY2018070]. The requirement for informed consent was waived by the Ethics Review Committee of Wenzhou people’s Hospital, given the retrospective nature of the study.
: Not applicable.
: The authors declare that they have no competing interests.