International AIDS Vaccine Initiative, New York, NIHR Imperial Clinical Research Facility, International AIDS Vaccine Initiative, New York, University of Surrey - Surrey Clinical Research Centre, International AIDS Vaccine Initiative, London, Duke University - Department of Surgery, International AIDS Vaccine Initiative, London, International AIDS Vaccine Initiative, New York, The EMMES Corporation, University of Surrey - Surrey Clinical Research Centre, Duke University - Department of Surgery, International AIDS Vaccine Initiative, New York, Global BioSolutions, International AIDS Vaccine Initiative, London, University of Pennsylvania - Children's Hospital of Philadelphia, University of Pennsylvania - Children's Hospital of Philadelphia and University of Pennsylvania - Children's Hospital of Philadelphia