[1] Great Ormond St Hosp Sick Children, ENT Dept, Great Ormond St, London WC1N 3JH, England
[2] Britain Nepal Otol Serv Ear Hlth Community Serv, Nepalganj, Nepal
[3] London Sch Hyg & Trop Med, Int Ctr Evidence Disabil, London, England
[4] Cardiff Univ, Sch Psychol, Cardiff, Wales
[5] Homerton Univ Hosp Fdn Trust, ENT Dept, London, England
[6] Tribhuvan Univ Teaching Hosp, Inst Med, Kathmandu, Nepal