Funding for this research was provided by:
Seoul National University (80020160151)
Received: 2 December 2018
Accepted: 24 May 2019
First Online: 30 May 2019
Ethics approval and consent to participate
: Informed consent to participate in this public survey is obtained from all participants. Interested and eligible participants receive information about the study of verbal recording. The entire process of this study was approved by the Institutional Review Board of Seoul National University Hospital (IRB No. 1804–024-934).
: Not applicable.
: The authors declare that they have no competing interests.