1. Department of Paediatrics, Nuffield Department of Medicine, Peter Medawar Building for Pathogen Research, South Parks Rd., Oxford OX1 3SY, United Kingdom
2. Department of Microbiology, University of Washington School of Medicine, Seattle, Washington 98195-8070
3. Microsoft Research, One Microsoft Way, Redmond, Washington 98052
4. Partners AIDS Research Center, Massachusetts General Hospital, 13th St., Bldg. 149, Charlestown, Boston, Massachusetts 02129
5. HIV Pathogenesis Programme, The Doris Duke Medical Research Institute, University of KwaZulu-Natal, Durban, South Africa
6. Howard Hughes Medical Institute, Chevy Chase, Maryland