1. Department of Otorhinolaryngology‐Head and Neck Surgery Korea University Ansan Hospital Ansan Gyeonggi‐do Republic of Korea
2. Department of Otorhinolaryngology‐Head and Neck Surgery, CHA Bundang Medical Center CHA University School of Medicine Seongnam Gyeonggi‐do Republic of Korea
3. Department of Nuclear Medicine Korea University Ansan Hospital Ansan Gyeonggi‐do Republic of Korea
4. Department of Nuclear Medicine, CHA Bundang Medical Center CHA University School of Medicine Seongnam Gyeonggi‐do Republic of Korea