Funding for this research was provided by:
Received: 30 March 2021
Accepted: 24 May 2021
First Online: 12 June 2021
: The trial was conducted in accordance with the Declaration of Helsinki (as revised in 2013). The study was approved by institutional review board of Korea University Medical Center (ED16364) and informed consent was taken from all individual participants.
: Not applicable.
: The authors have no conflicts of interest to declare.