Funding for this research was provided by:
Ministry of Science and Technology, Taiwan (MOST 106-2314-B-010-028-MY3, MOST 106-2314-B-075-030-MY3, MOST 106-2321-B-039-003)
Taipei Veterans General Hospital (V107C-182, V106C-060, V106C-174)
Received: 28 June 2019
Accepted: 18 November 2019
First Online: 13 January 2020
Consent for publication
: Not applicable.
: The authors declare that they have no competing interests.