1. Division of Rhinology, Faculty of Medicine Universitas Indonesia, Dr. Cipto Mangunkusumo National Hospital, Jakarta, Indonesia
2. Department of Otorhinolaryngology Head and Neck Surgery, Faculty of Medicine Universitas Indonesia Dr. Cipto Mangunkusumo National Hospital, Jakarta, Indonesia
3. Division of Bronchoesophagology, Faculty of Medicine Universitas Indonesia, Dr. Cipto Mangunkusumo National Hospital, Banten, Indonesia
4. Division of Laryngopharyngology, Faculty of Medicine Universitas Indonesia, Dr. Cipto Mangunkusumo National Hospital, Banten, Indonesia
5. Department of Otorhinolaryngology Head, and Neck Surgery, Faculty of Medicine University of Pelita Harapan, Tangerang, Banten, Indonesia