Received: 6 April 2020
Accepted: 30 July 2020
First Online: 7 August 2020
Ethics approval and consent to participate
: The study protocol was approved by the institutional review board of Taoyuan branch of Chang Gung Memorial Hospital as IRB102-2284B. Due to the retrospective design of the study, the local ethic committee confirmed that informed consent was not necessary from participants.
: Not applicable.
: The authors declare that they have no competing interests.