Received: 5 July 2021
Accepted: 26 November 2021
First Online: 23 December 2021
: The study protocol has got written approval of the Ethics Committee of the first affiliated hospital of Zhejiang university school of medicine. This study was cross-sectional and all the data were anonymous, so the requirement for the informed consent was waived. All methods were performed in accordance with the relevant guidelines and regulations.
: Not applicable.
: The authors declare that they have no conflicts of interest to this work.