A national DNA bank in The Gambia, West Africa, and genomic research in developing countries. by Sirugo, G, Schim van der Loeff, M, Sam, O, Nyan, O, Pinder, M, Hill, A, Kwiatkowski, D, Prentice, A, de Toma, C, Cann, H, Diatta, M, Jallow, M, Morgan, G, Clarke, M, Corrah, T, Whittle, H, McAdam, K