1. Department of Medical Services, Federal Neuropsychiatric Hospital, Barnawa, Kaduna, Nigeria
2. Carleton Clinic, Cumbria, Northumberland, Tyne and Wear NHS Foundation Trust, Carlisle, Cumbria, United Kingdom
3. Department of Psychological Medicine, College of Medicine University of Nigeria, Ituku, Enugu, Nigeria
4. Department of Psychiatry, University of Calabar Teaching Hospital, Calabar, Nigeria
5. Department of Mental Health, University of Maiduguri, Maiduguri, Nigeria