Immunogenicity of a universal HIV-1 vaccine vectored by DNA, MVA and ChAdV-63 in a phase I/IIa clinical trial - Hanke, T; Borthwick, N; Ahmed, T; Hayton, E; Ebrahimsa, U; Rose, A; Black, A; Yang, H; Hancock, G; Colloca, S; Nicosia, A; Mcmichael, A; et al. (2012)