[1] Hosp Rivadavia, Buenos Aires, DF, Argentina
[2] ILAR, Santa Fe, Argentina
[3] Hosp Univ San Jorge, Pereira, Colombia
[4] CEMIC, Buenos Aires, DF, Argentina
[5] Hosp Italiano La Plata, La Plata, Argentina
[6] IICZAR, Buenos Aires, DF, Argentina
[7] Pfizer SRL, Buenos Aires, DF, Argentina