1. Department of Otolaryngology-Head and Neck Surgery, Armed Forces Hospital Southern Region, Khamis Mushayt, Saudia Arabia
2. Byers Eye Institute, Stanford University, Palo Alto, CA, United States
3. Department of Otorhinolaryngology-Head and Neck Surgery, Jinnah Medical College and Hospital, Karachi, Pakistan
4. Department of Otorhinolaryngology-Head and Neck Surgery, Sir Syed College of Medical Sciences for girls, Karachi, Pakistan
5. Department of Cardiology, Shifa Intersternal Hospital, Islamabad, Pakistan
6. Department of Otolaryngology-Head and Neck Surgery, The Aga Khan Hospital, Dar-es-salaam, Tanzania