Multidrug-resistant human immunodeficiency virus type 1 strains resulting from combination antiretroviral therapy. by Iversen, A, Shafer, R, Wehrly, K, Winters, M, Mullins, J, Chesebro, B, Merigan, T

Functional characteristics of HIV-1 subtype C compatible with increased heterosexual transmissibility. by Walter, B, Armitage, A, Graham, S, de Oliveira, T, Skinhøj, P, Jones, E, Stuart, D, Mcmichael, A, Chesebro, B, Iversen, A