Received: 30 November 2020
Accepted: 26 May 2021
First Online: 28 June 2021
: The current research protocol was approved by the Institutional Review Board of Taipei Medical University (No. N201805098). While the research involved survey without identifiers, answering the survey served as implicit consent. So informed consent was taken. All methods were carried out in accordance with Declaration of Helsinki.
: Not applicable.
: The authors declare they have no competing interests.