1. Department of Internal Medicine, Imo State University, Owerri, Nigeria
2. Department of Community Medicine, Imo State University, Owerri, Nigeria
3. Department of Psychological Medicine, University of Nigeria Nsukka, Enugu, Nigeria
4. Department of Psychiatry, University of Calabar Teaching Hospital, Calabar, Nigeria
5. Department of Psychological Medicine, Federal Teaching Hospital Abakaliki, Ebonyi, Nigeria