1. Pasteur Institute—Italy, Istituto Pasteur—Fondazione Cenci Bolognetti, Rome, Italy
2. Department of Infectious, Parasitic and Immune-Mediated Diseases, Istituto Superiore di Sanità, Rome, Italy
3. Department of Molecular Medicine, Sapienza University of Rome, Rome, Italy
4. National HIV/AIDS Research Center, Istituto Superiore di Sanità, Rome, Italy