Impact of RTS,S/AS02(A) and RTS,S/AS01(B) on genotypes of P. falciparum in adults participating in a malaria vaccine clinical trial. oleh John N Waitumbi, Samuel B Anyona, Carol W Hunja, Carolyne M Kifude, Mark E Polhemus, Douglas S Walsh, Chris F Ockenhouse, D Gray Heppner, Amanda Leach, Marc Lievens, W Ripley Ballou, Joe D Cohen, Colin J Sutherland