1 Department of Global Health, Boston University School of Public Health, Boston, MA; Health Economics and Epidemiology Research Office (HE(2)RO), Department of Internal Medicine, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa; Department of Medical Microbiology, Amsterdam University Medical Center, University of Amsterdam, Amsterdam, Netherlands. Electronic address: brooken@bu.edu.
2 Department of Internal Medicine, Division of Infectious Diseases, Amsterdam Institute for Infection and Immunity, University of Amsterdam, Amsterdam, Netherlands; Stichting HIV Monitoring, Amsterdam, Netherlands.