Funding for this research was provided by:
Mackay Memorial Hospital and the National Taiwan University of Science and Technology Corporation Program (MMH-NTUST-106-05)
Received: 24 October 2019
Accepted: 27 March 2020
First Online: 15 April 2020
Ethics approval and consent to participate
: Permission to collect the data was obtained from Mackay Memorial Hospital.
: Not applicable: no individual person’s data.
: The authors declare that they have no competing interest.