Received: 20 November 2019
Accepted: 6 July 2020
First Online: 20 July 2020
Ethics approval and consent to participate
: All participants gave their written informed consent prior to participate in this study<b>.</b> Approval of this study was obtained from the Institutional Review Board of Chang Gung Memorial Hospital, Taiyuan, Taiwan.
: Not applicable.
: The authors declare that they have no competing interests.