1. Department of Otolaryngology—Head and Neck—Facial Plastic Surgery, King Abdul-Aziz University Hospital
2. Department of Otorhinolaryngology—Head and Neck, College of Medicine, King Saud University
3. Department of Otorhinolaryngology and Head and Neck Surgery
4. Department of Otorhinolaryngology—Head and Neck Surgery, AlHabib Hospital, Riyadh, Saudi Arabia