Funding for this research was provided by:
Taichung Veterans General Hospital (TCVGH-1093505D)
National Health Research Institute (NHRI-EX109-10927HT)
Article History
Received: 14 July 2020
Accepted: 1 October 2020
First Online: 9 October 2020
Ethics approval and consent to participate
: The study complied with the Declaration of Helsinki and was approved by the Institutional Review Board of Taichung Veterans General Hospital, with a waiver of the need for informed consent.
: Not applicable.
: The authors declare that they have no competing interests.