[1] Univ Colorado, Dept Immunol & Microbiol, Anschutz Med Campus, Aurora, CO USA
[2] MRC UVRI & LSHTM Uganda Res Unit, Entebbe, Uganda
[3] Frederick Natl Lab Canc Res, Viral Oncol Sect, AIDS & Canc Virus Program, Leidos Biomed Res, Frederick, MD 21701 USA