1. Department of Internal Medicine, Korea Cancer Center Hospital, Korea Institute of Radiological & Medical Sciences, Seoul, Korea.
2. Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Korea.
3. Department of Internal Medicine, College of Medicine, Chungbuk National University, Cheongju, Korea.
4. Department of Surgery, Sungkyunkwan University School of Medicine, Seoul, Korea.
5. Human Medical Imaging and Intervention Center, Seoul, Korea.
6. Department of Nuclear Medicine, University of Ulsan College of Medicine, Seoul, Korea.
7. Department of Pathology, Seoul National University College of Medicine, Seoul, Korea.
8. Department of Otorhinolaryngology-Head and Neck Surgery, Sungkyunkwan University School of Medicine, Seoul, Korea.
9. Department of Endocrinology and Metabolosm, University of Ulsan College of Medicine, Seoul, Korea.
10. Department of Surgury, School of Medicine, Gachon University, Incheon, Korea.
11. Department of Nuclear Medicine, Kyungpook National University School of Medicine, Daegu, Korea.
12. Department of Radiology, University of Ulsan College of Medicine, Seoul, Korea.
13. Department of Medicine, Sungkyunkwan University School of Medicine, Seoul, Korea.
14. Department of Hospital Pathology, College of Medicine, The Catholic University of Korea, Seoul, Korea.
15. Department of Otolaryngology, University of Ulsan College of Medicine, Seoul, Korea.