1. Oncology Division, Department of Otorhinolaryngology Head and Neck Surgery, Dr. Cipto Mangunkusumo General Hospital, Universitas Indonesia, Jakarta, Indonesia
2. Department of Otorhinolaryngology Head and Neck surgery, Dr. Cipto Mangunkusumo General Hospital, Universitas Indonesia, Jakarta, Indonesia
3. Pathology Anatomy Department, Dr. Cipto Mangunkusumo General Hospital, Universitas Indonesia, Jakarta, Indonesia
4. Faculty of Medicine, Radiology Department, Dr. Cipto Mangunkusumo General Hospital, Universitas Indonesia, Jakarta, Indonesia