1. Director of Medical Education, Faculty of Medical Sciences, The University of the West Indies, Cave Hill Campus, Barbados
2. Lecturer in Anatomy, Faculty of Medical Sciences, The University of the West Indies, Cave Hill Campus, Barbados
3. Lecturer in Microbiology, Faculty of Medical Sciences, The University of the West Indies, Cave Hill Campus, Barbados
4. Department of Microbiology, Queen Elizabeth Hospital, Bridgetown, Barbados
5. Associate Professor of Pharmacology and Public Health, School of Medicine, American University of Integrative Sciences, Bridgetown, Barbados
6. The University of the West Indies, St. Augustine Campus, Trinidad and Tobago
7. Professor of the Unit of Pharmacology, Faculty of Medicine and Defence Health, Universiti Pertahanan Nasional Malaysia (National Defence University of Malaysia), Kuala Lumpur, Malaysia