1. Department of Infectious Diseases, School of Medicine, University of São Paulo, Brazil.
2. AIDS Clinic, School of Medicine, University of São Paulo, Brazil.
3. Department of Virology (WHO accredited for HIV Resistance), Hôpital Pellegrin, and CNRS UMR 5234, Bordeaux, France.
4. Department of Internal Medicine and Tropical Diseases, Hôpital St-André, University Hospital Center of Bordeaux, and INSERM U897, University Bordeaux Segalen, France.
5. Virology Laboratory (LIM-52), School of Medicine, University of São Paulo, Brazil.