[1] Fdn LILA Milano Lega Italiana Lotta AIDS, Prevent Dept, Milan, Italy
[2] Anlaids Onlus ETS, Rome, Italy
[3] Network Persone Sieroposit Italia APS, Milan, Italy
[4] Icona Fdn, Milan, Italy
[5] Assoc Arcobaleno AIDS ODV, Turin, Italy
[6] Circolo Cultura Omosessuale Mario Mieli, Rome, Italy
[7] Policlin San Martino Hosp, Infect Dis Clin, Genoa, Italy
[8] Natl Inst Infect Dis Lazzaro Spallanzani, Clin & Res Dept, Rome, Italy
[9] Azienda Osped Univ Modena, Dept Infect Dis, Modena, Italy
[10] Univ Torino, Dept Med Sci, Unit Infect Dis, Turin, Italy
[11] Assoc Solidarieta AIDS ODV, Milan, Italy
[12] Sapienza Univ Rome, SM Goretti Hosp, Infect Dis Unit, Latina, Italy
[13] Univ Cattolica Sacro Cuore, Infect Dis Unit, Fdn Policlin Univ A Gemelli IRCCS, Rome, Italy