Funding for this research was provided by:
taipei veterans general hospital (V109E-004-05, V108C-020)
Received: 10 February 2021
Accepted: 8 July 2021
First Online: 30 July 2021
: The study was approved by local institutional review board. (IRB No.: 2019-11-009AC).
: Not applicable.
: The authors declare that they have no competing interests.