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Article History

Received: 19 April 2021

Accepted: 9 August 2021

First Online: 31 August 2021

Declarations

:

: A telephone consent script that included the following information was concisely described to the study subjects before the telephone interview: <i>purposes of the study, duration of the subject’s participation, description of the procedures, description of risks/discomforts, description of benefits, confidentiality, whom (and how) to contact for questions regarding the study (researcher) and their rights as participants, voluntary nature of participation in the research and her/his ability to withdraw without any penalty, and the approximate number of subjects</i>. The informed verbal consent process was considered complete when the study subject raised no more questions and agreed to initiation of the telephone interview. This current study was approved by the National Chung Kung University Governance Framework for Human Research Ethics (No. 109–385) that also approved the content of telephone consent script as well as the procedure for verbal consent used in this study. All authors confirm that all methods were performed in accordance with the relevant guidelines and regulations.

: Not applicable.

: The authors declare that they have no competing interests.