Temporal trends in prognostic markers of HIV-1 virulence and transmissibility: an observational cohort study - Pantazis, Nikos; Porter, Kholoud; Costagliola, Dominique; de Luca, Andrea; Ghosn, Jade; Guiguet, Marguerite; Johnson, Anne M; Kelleher, Anthony D; Morrison, Charles; Thiebaut, Rodolphe; others (The Lancet HIV, 2014)