Affiliation: | (1) Department of Medicine, University of the West Indies, Kingston 7, Jamaica;(2) Department of Basic Medical Sciences, University of the West Indies, Kingston 7, Jamaica;(3) Department of Pathology, University of the West Indies, Kingston 7, Jamaica;(4) Faculty of Pure and Applied Science, University of the West Indies, Kingston 7, Jamaica;(5) Department of Saturnino Lora Hospital, Santiago de Cuba, Cuba |