Funding for this research was provided by:
Kaohsiung Medical University Hospital. (KMUH105-M512)
Received: 2 May 2019
Accepted: 26 July 2019
First Online: 5 August 2019
Ethics approval and consent to participate
: The study was approved by the Institutional Review Board of the Kaohsiung Medical University Hospital (KMUHIRB-EXEMPT (II)-20190008) and Kaohsiung Armed Forces General Hospital (KAFGH 106–039).
: Not applicable.
: The authors declare no competing interests.