Received: 7 April 2020
Accepted: 13 September 2020
First Online: 16 September 2020
Ethics approval and consent to participate
: This study was approved by the ethics committee and the institutional review board of E-DA hospital, Kaohsiung, Taiwan (Approval number EMRP-107-114). The written informed consent was received from every responder involved in this study.
: Not applicable.
: The authors declare that they have no competing interests.