1. Department of Otolaryngology – Head and Neck Surgery Samsung Changwon Hospital Sungkyunkwan University School of Medicine Changwon Korea
2. Department of Otorhinolaryngology – Head and Neck Surgery College of Medicine Pusan National Universtiy and Biomedical Research Institute Pusan National University Hospital Busan Korea
3. Department of Pathology Samsung Changwon Hospital Sungkyunkwan University School of Medicine Changwon Korea
4. Department of Pathology College of Medicine Pusan National Universtiy and Biomedical Research Institute Pusan National University Hospital Busan Korea
5. Department of Otorhinolaryngology – Head and Neck Surgery College of Medicine Pusan National University and Biomedical Research Institute Pusan National University Yangsan Hospital Yangsan Korea
6. Department of Life Science in Dentistry School of Dentistry Pusan National University Yangsan Korea