Article History
Received: 15 November 2020
Accepted: 19 July 2021
First Online: 26 July 2021
Declarations
:
: This study was approved by the Ethics Committee of the First Affiliated Hospital of Soochow University. The approval number is 2020226. All patient records were anonymized and de-identified and the Ethics Committee waived the need for written, informed consent before analysis due to the retrospective nature of the data.
: Consent for publication of raw data not obtained but dataset is fully anonymous in a manner that can easily be verified by any user of the dataset. Publication of the dataset clearly and obviously presents minimal risk to confidentiality of study participants.
: The authors declare that they have no competing interests.