University of Ulsan - Asan Medical Center, University of Ulsan - Asan Medical Center, University of Ulsan - Asan Medical Center, Sungkyunkwan University - Samsung Changwon Hospital, Dankook University Hospital, University of Ulsan - Asan Medical Center, University of Ulsan - Asan Medical Center, affiliation not provided to SSRN, University of Ulsan - College of Medicine, University of Ulsan - Asan Medical Center and University of Ulsan - Department of Convergence Medicine