Article History
Received: 13 April 2019
Accepted: 11 May 2020
First Online: 27 May 2020
Compliance with ethical standards
:
: The author(s) declare no competing interests.
: The study was approved by the Institutional Review Board of Tri-Service General Hospital (TSGHIRB 099-05-047) in accordance with the revised Helsinki Declaration.
: The ethical committee approved the protocol.
: All participants provided written informed consent.