Funding for this research was provided by:
Ministry of Science and Technology, Taiwan (MOST107-2314-B-075B-009; MOST108-2314-B-075B-001-MY3)
Kaohsiung Veterans General Hospital (VGHKS109-124)
Kaohsiung Medical University Chung-Ho Memorial Hospital (KMUH104- 4R16, KMUH106- 6T09 and KMUH108-8M23)
Kaohsiung Medical University (KMU-Q108029)
Received: 24 March 2020
Accepted: 21 December 2020
First Online: 7 January 2021
Ethics approval and consent to participate
: The NHIRD files contain de-identified secondary data, and encrypt patient personal information to protect privacy. Informed consents from the participants are therefore waived, which does not affect the rights and welfare of the participants. This study was also approved by ethical review board of Kaohsiung Medical University Hospital and was performed according to Declaration of Helsinki guidelines. (KMUHIRB-EXEMPT (II) 20160016). According to the IRB regulations, the need for informed consent was also waived.
: Not applicable.
: The authors declare that they have no competing interests.