Funding for this research was provided by:
Chang Gung Memorial Hospital, Linkou (Keelung Chang Gung Memorial Hospital CGRD Research Grant.)
Received: 27 May 2020
Accepted: 31 October 2020
First Online: 9 November 2020
Ethics approval and consent to participate
: Due to retrospective nature of the database study, the hospital identification number of each patient was encrypted and de-identified to protect their privacy. Therefore, informed consent was waived for this study. The institutional review board of Chang Gung Memorial Hospital approved the study protocol.
: All authors have read the manuscript and consent for publication.
: The authors declared none.