1. Institute for Maternal and Child Health-IRCCS “Burlo Garofolo”; Trieste Italy
2. University of Trieste; Trieste Italy
3. MST Centre; ASUITS; Trieste Italy
4. Laboratory of Clinical Chemistry and Microbiological Analysis AAS2 “Bassa Friulana-Sontina”-S. Polo General Hospital; Monfalcone (GO) Italy
5. Dermatology Center; MST/AIDS; AAS2; “Bassa Friulana-Isontina”; Gorizia Italy
6. AIDS Operative Center-ISS; Roma Italy