Received: 24 June 2021
Accepted: 26 August 2021
First Online: 6 September 2021
: This retrospective study was approved by the Taipei Medical University-Joint Institutional Review Board (TMU-JIRB; approval number: N202001006). The requirement for obtaining informed consent was waived by the TMU-JIRB due to the retrospective nature of the investigation.
: Not applicable.
: This paper does not have a conflict of interest.