1. Department of Epidemiology and Biostatistics, University of California, San Francisco;
2. Centre Hospitalier de l'Universite de Montreal (CRCHUM), Université de Montréal, Quebec, Canada;
3. Department of Medicine, University of California, San Francisco;
4. Burnet Institute, Melbourne, Australia;
5. Department of Public Health and Epidemiology of Infectious Disease, Academic Medical Center, Amsterdam, The Netherlands;
6. Department of Medicine, Johns Hopkins Medical Institutions, Baltimore, Maryland;
7. Kirby Institute, University of New South Wales, Sydney, Australia;
8. Department of Medicine, Massachusetts General Hospital, Boston;
9. School of Medical Sciences, University of New South Wales, Sydney,Australia; and
10. Department of Internal Medicine, University of New Mexico Health Center, Albuquerque