He is author or co-author of three books and over 140 publications on sickle - cell disease .
He was Director of the MRC Epidemiology Research Unit at the University of the West Indies and remains chairman of the Sickle Cell Trust ( Jamaica ) .
Director is Director or co-author of three books and over 140 publications on sickle - cell disease .
He was Director of the MRC Epidemiology Research Unit at the University of the West Indies and remains chairman of the Sickle Cell Trust ( Jamaica ) .