1. School of Health and Life Sciences, Teesside University, Middlesbrough, United Kingdom
2. Campaign for Head and Neck Cancer Education Programme, Cephas Health Research Initiative Inc, Ibadan, Nigeria
3. Department of Medicine, Nottingham University Hospital NHS Trust, Nottingham, United Kingdom
4. Department of Oral and Maxillofacial Surgery, University College Hospital, Ibadan, Nigeria
5. Medical Research Unit, Adonai Hospital, Karu, Nigeria
6. Department of Ophthalmology, Federal Medical Centre, Asaba, Nigeria
7. Department of Sociology, Usmanu Danfodiyo University, Sokoto, Nigeria
8. African Field Epidemiology Network, Abuja, Nigeria
9. Department of Medicine, University College Hospital, Ibadan, Nigeria
10. Department of Microbiology, Federal University Birnin Kebbi, Birnin Kebbi, Nigeria
11. Department of Dental and Maxillofacial Surgery, Usmanu Danfodiyo University Teaching Hospital, Sokoto, Nigeria