1. Department of Cardiology, Kim Hae Jungang Hospital, Gyeongsangnam-do 621-921, Korea.
2. Department of Radiology, Medical Research Institute, Pusan National University Yangsan Hospital, Pusan National University, School of Medicine, Gyeongsangnam-do 626-770, Korea.
3. Department of Cardiology, Medical Research Institute, Pusan National University Yangsan Hospital, Pusan National University, School of Medicine, Gyeongsangnam-do 626-787, Korea.
4. Department of Family Medicine, Pusan National University Yangsan Hospital, Pusan National University School of Medicine, Gyeongsangnam-do 626-770, Korea.