1. Department of Radiology, Chonbuk National University Medical School and Hospital, Chonju 560-182, Korea.
2. Research Institute of Clinical Medicine, Chonbuk National University Medical School and Hospital, Chonju 560-182, Korea.
3. Institute of Cardiovascular Research, Chonbuk National University Medical School and Hospital, Chonju 560-182, Korea.
4. Department of Internal Medicine, Chonbuk National University Medical School and Hospital, Chonju 560-182, Korea.