1. Department of Internal Medicine, Dong-A University College of Medicine, Busan, Korea.
2. Department of Anatomy, School of Medicine, Pusan National University, Yangsan, Korea.
3. Department of Orthopaedic Surgery and Biomedical Research Institute, Pusan National University Hospital, Busan, Korea.
4. Department of Statistics, Korea University, Seoul, Korea.
5. Biomedical Research Institute, Pusan National University Hospital and School of Medicine, Pusan National University, Busan, Korea.
6. Department of Otorhinolaryngology-Head and Neck Surgery, Ajou University Hospital, Suwon, Korea.
7. Department of Otorhinolaryngology-Head and Neck Surgery, Pusan National University Hospital, Busan, Korea.
8. Department of Nuclear Medicine and Research Institute for Convergence of Biomedical Science and Technology, Pusan National University Yangsan Hospital, Yangsan, Korea.
9. Department of Nuclear Medicine and Biomedical Research Institute, Pusan National University Hospital, Busan, Korea.