1. National Institute for Health Research (NIHR) Biomedical Research Unit in Nutrition, Diet and Lifestyle; The University Hospitals Bristol NHS Foundation Trust and the University of Bristol; Bristol UK
2. Bristol Dental School; University of Bristol; Bristol UK
3. School of Social and Community Medicine; University of Bristol; Bristol UK
4. Department of Applied Statistics; Helwan University; Cairo Egypt
5. Life and Health Sciences; Aston University; Birmingham UK
6. Children’s Hearing Centre; St Michael’s Hospital; Bristol UK
7. North Thames Regional Cleft Service, Speech and Language Therapy Department; Centre for Outcomes and Experience Research in Children's Health, Illness and Disability (ORCHID); Great Ormond Street Hospital NHS Foundation Trust; London UK
8. Cleft Net East Cleft Network; Addenbrooke's Hospital; Cambridge UK
9. Bristol Speech Language Therapy Research Unit; North Bristol NHS Trust; Bristol UK