1. Department of Otorhinolaryngology, Head & Neck Surgery, Faculty of Medicine The Chinese University of Hong Kong Hong Kong SAR China
2. Speech, Hearing and Phonetic Sciences Division of Psychology & Language Sciences University College London London UK
3. Department of Otorhinolaryngology, Head and Neck Surgery Faculty of Medicine The Chinese University of Hong Kong Hong Kong SAR China
4. Illness and Disability (ORCHID) Centre for Outcomes and Experience Research in Children's Health London UK