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*Centre for Infectious Disease Research in Zambia, Lusaka, Zambia
†Schools of Medicine and Public Health, University of North Carolina at Chapel Hill, Chapel Hill, NC
‡School of Medicine, University of East Anglia, Norwich, United Kingdom
§Vanderbilt University School of Medicine, Nashville, TN
‖Zambian Ministry of Health, Lusaka, Zambia
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Partially supported by the President's Emergency Plan for AIDS Relief through a grant to the Centre for Infectious Disease Research in Zambia from the US Department of Health and Human Services and the US Centers for Disease Control and Prevention's Global AIDS Program (cooperative agreement U2GGH000226). Additional investigator salary and trainee support was provided by the US National Institutes of Health (grants D43-TW001035 and R24 TW007988).
The abstract of this article was presented as a poster at the 16th International Workshop on HIV Observational Databases, March 29-31, 2012, Athens, Greece. The data have not been previously published.