Received: 16 May 2020
Accepted: 24 March 2021
First Online: 8 April 2021
: The data collection scheme and research were approved by the Ethics Committee of Shenzhen Hospital, Southern Medical University (No. NYSZYYEC20200014). Under the terms of the approval, studies must undergo independent scientific review. Following approval, members of the research team were authorised to access the raw data for this study. All data were anonymised prior to use. The requirement for individual patient consent was waived because no identifiable information was collected, which was approved by the Ethics Committee of Shenzhen Hospital, Southern Medical University.
: Not applicable.
: The authors declare that there is no competing interest.