1. Department of Internal Medicine, Daejeon St. Mary's Hospital, The Catholic University of Korea College of Medicine, Daejeon, Korea.
2. Department of Radiology, Daejeon St. Mary's Hospital, The Catholic University of Korea College of Medicine, Daejeon, Korea.
3. Department of Surgery, Daejeon St. Mary's Hospital, The Catholic University of Korea College of Medicine, Daejeon, Korea.