Funding for this research was provided by:
Korea Health Industry Development Institute funded by the Ministry of Health & Welfare (HI17C1095)
Received: 16 July 2020
Accepted: 15 March 2021
First Online: 6 April 2021
: All subjects gave their informed consent for inclusion before they participated in the study. The study was conducted in accordance with the Declaration of Helsinki, and the protocol was approved by the Ethics Committee of the Yonsei University Health System (project no: 4-2018-0753).
: All authors agree for publication.
: The authors declare that they have no competing interests.