1. Campaign for Head and Neck Cancer Education (CHANCE) Program, Cephas Health Research Initiative Inc. , Ibadan , Nigeria
2. Dental Clinic, Kebbi Medical Centre , Kalgo , Nigeria
3. Faculty of Dentistry , University of Ibadan , Ibadan , Nigeria
4. Department of Medicine , University College Hospital , Ibadan , Nigeria
5. Department of Physiotherapy , University of Ibadan , Ibadan , Nigeria
6. Department of Periodontology and Community Dentistry , University College Hospital , Ibadan , Nigeria