1. Instituto Oswaldo Cruz/FIOCRUZ, AIDS and Molecular Immunology Laboratory, Rio de Janeiro, Brazil.
2. Hospital Geral de Nova Iguaçu (HGNI), HIV Family Care Clinic (HHFCC), Rio de Janeiro, Brazil.
3. Fundação Oswaldo Cruz, Instituto de Pesquisa Clínica Evandro Chagas/IPEC, Rio de Janeiro, Brazil.
4. Department of Mathematics and Statistics, Universidade Federal do Estado do Rio de Janeiro (UNIRIO), Rio de Janeiro, Brazil.
5. David Geffen School of Medicine at UCLA, Division of Infectious Diseases and Center for Clinical AIDS Research and Education, University of California, Los Angeles, California.