1. Department of Oncology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
2. Department of Nuclear Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
3. Department of Radiology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
4. Department of Pathology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
5. Department of Radiation Oncology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
6. Department of Otolaryngology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
7. Department of Colon and Rectal Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea