Funding for this research was provided by:
Ministry of Health and Welfare (MOHW109-TDU-B-212-114004)
Received: 1 June 2020
Accepted: 30 November 2020
First Online: 5 December 2020
Ethics approval and consent to participate
: The NHIRD encrypts patient personal information to protect privacy and provides researchers with anonymous identification numbers associated with relevant claims information, including sex, date of birth, medical services received, and prescriptions. Therefore, patient consent is not required to access the NHIRD. This study was approved to fulfill the condition for exemption by the Institutional Review Board (IRB) of China Medical University (CMUH104-REC2–115-AR4). The IRB also specifically waived the consent requirement.
: Not applicable.
: The authors declare no financial or other conflicts of interest.