[1] Univ Buenos Aires, Fac Med, Inst Invest Biomed Retrovirus, Paraguay 2155 Piso 11,C1121 ABG, Buenos Aires, DF, Argentina
[2] Consejo Nacl Invest Cient & Tecn, SIDA, Buenos Aires, DF, Argentina
[3] Consejo Nacl Invest Cient & Tecn, Fundacien Inst Leloir, Buenos Aires, DF, Argentina
[4] Hosp Clin Jose San Martin, Buenos Aires, DF, Argentina
[5] Hosp Alejandro Posadas, Buenos Aires, DF, Argentina
[6] Hosp Cent San Isidro Melchor A Posse, Buenos Aires, DF, Argentina
[7] Hosp Villa Mercedes Juan Domingo Peron, San Luis, Argentina