1. Department of Epidemiology, Robert Stempel College of Public Health and Social Work, Florida International University, Miami, Florida, USA.
2. Medical Research Foundation of Trinidad and Tobago, Port of Spain, Trinidad.
3. Research Center in Minority Institutions (RCMI), Florida International University, Miami, Florida, USA.
4. Department of Paraclinical Sciences, University of the West Indies, St. Augustine, Trinidad.