1. Department of Medicine and Therapeutics, University of Ghana School of Medicine and Dentistry, Accra, Ghana
2. Department of Community Health, University of Ghana School of Medicine and Dentistry, Accra, Ghana
3. Department of Medicine and Therapeutics, Korle bu Teaching Hospital, Accra, Ghana.
4. Department of Psychiatry, University of Ghana School of Medicine and Dentistry, Accra, Ghana