A novel sample selection approach to aid the identification of factors that correlate with the control of HIV-1 infection by Makinde, J, Nduati, EW, Freni-Sterrantino, A, Streatfield, C, Kibirige, C, Dalel, J, Black, SL, Hayes, P, Macharia, G, Hare, J, McGowan, E, Abel, B, King, D, Joseph, S, IAVI Protocol C Investigators, Hunter, E, Sanders, EJ, Price, M, Gilmour, J