1. Department of Mathematics and Statistics, Faculty of Science and Technology, The University of the West Indies, St Augustine Campus, St Augustine, Trinidad
2. Department of Clinical Medical Sciences, Faculty of Medical Sciences, The University of the West Indies, St Augustine Campus, St Augustine, Trinidad
3. Caribbean Orthopaedic Foot and Ankle Institute, Medical Associates Hospital, St Joseph, Trinidad
4. Harlem Hospital Center, New York City, NY, USA
5. Caribbean Vascular and Vein Clinic, St Clair Medical Center, Port of Spain, Trinidad