HLA-Cw*03-restricted CD8+ T-cell responses targeting the HIV-1 gag major homology region drive virus immune escape and fitness constraints compensated for by intracodon variation. by Honeyborne, I, Codoñer, F, Leslie, A, Tudor-Williams, G, Luzzi, G, Ndung'u, T, Walker, B, Goulder, P, Prado, J