Vanderbilt University Medical Center - Department of Biostatistics, Vanderbilt University - Medical Center, Vanderbilt University - Medical Center, Instituto de Investigaciones Clínicas Zárate, Oswaldo Cruz Foundation (FIOCRUZ) - Instituto Nacional de Infectologia Evandro Chagas (INIEC), University of Chile - Faculty of Medicine, Hospital Escuela, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Universidad Peruana Cayetano Heredia, Vanderbilt University - Medical Center, Vanderbilt University - Medical Center, Les Centres Haitian Group for the Study of Kaposi's Sarcoma and Opportunistic Infections (GHESKIO), Vanderbilt University - Division of Infectious Diseases and Harvard University - Harvard Medical School