1. Doctors Without Borders, Amsterdam; Holland. Noma Project; Sokoto Nigeria
2. Division of Facial Plastic and Reconstructive Surgery, Department of Otolaryngology; Massachusetts Eye and Ear, Boston Children's Hospital, Harvard Medical School; Boston Massachusetts
3. Department of Global Health and Social Medicine; Boston Children's Hospital, Harvard Medical School; Boston Massachusetts
4. Department of Otolaryngology; University Teaching Hospital Kigali, University of Rwanda, College of Medicine & Health Sciences; Kigali Rwanda
5. Department of Otorhinolaryngology; Ochsner Health System; New Orleans Louisiana U.S.A
6. Department of Oral and Maxillofacial Surgery; Katharinen Hospital; Stuttgart Germany
7. Children's Noma Hospital; Sokoto State Nigeria
8. Department of Anaesthesia and Critical Care; Our Lady's Children's Hospital Crumlin; Dublin Ireland
9. Department of Anesthesiology, Perioperative and Pain Medicine; Boston Children's Hospital, Harvard Medical School; Boston Massachusetts