1. AIDS Pathogenesis Research Unit, Macfarlane Burnet Institute for Medical Research and Public Health, Fairfield
2. Department of Medicine, Monash University, Prahran
3. Victorian Infectious Diseases Reference Laboratory, North Melbourne
4. Department of Medicine and Microbiology, University of Alabama at Birmingham, Birmingham, Alabama
5. Department of Biochemistry and Molecular Biology, Monash University, Clayton, Australia