1. Department of Otorhinolaryngology-Head and Neck Surgery; Pusan National University School of Medicine, Pusan National University; Busan South Korea
2. Department of Nuclear Medicine; Pusan National University School of Medicine, Pusan National University; Busan South Korea
3. Department of Internal Medicine; Pusan National University School of Medicine, Pusan National University; Busan South Korea
4. Department of Radiology; Pusan National University School of Medicine, Pusan National University; Busan South Korea
5. Department of Otorhinolaryngology-Head and Neck Surgery; Inje University Ilsan Paik Hospital; Ilsan South Korea