Article History
Received: 26 September 2019
Revised: 28 July 2020
Accepted: 20 August 2020
First Online: 1 September 2020
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: This study was conducted in accordance with the tenets of the Declaration of Helsinki; the research protocol was approved by the Institutional Review Board of Ajou University School of Medicine, Suwon, South Korea (AJIRB-MED-OBS-17–331).