1. Institute for Clinical Research, College of Medicine, Pochon CHA University, Seongnam, Korea.
2. Department of Surgery, College of Medicine, Pochon CHA University, Seongnam, Korea.
3. Department of Internal Medicine, College of Medicine, Pochon CHA University, Seongnam, Korea.
4. Department of Pathology, College of Medicine, Pochon CHA University, Seongnam, Korea.