1. Department of Surgery, Chungbuk National University College of Medicine and Medical Research Institute, Cheongju, Korea.
2. Department of Internal Medicine, Cheongju St. Mary Hospital, Cheongju, Korea.
3. Department of Internal Medicine, Chungbuk National University College of Medicine and Medical Research Institute, Cheongju, Korea.
4. Department of Pathology, Chungbuk National University College of Medicine and Medical Research Institute, Cheongju, Korea.
5. Department of Laboratory Medicine, Chungbuk National University College of Medicine and Medical Research Institute, Cheongju, Korea.
6. Department of Anesthesiology and Pain Medicine, Chungbuk National University College of Medicine and Medical Research Institute, Cheongju, Korea.