[1] Hosp Gen Agudos Dr Ignacio Pirovano, Task Force Pediat Gastroenterol & Nutr, Buenos Aires, DF, Argentina
[2] Hosp Univ Austral, Dept Mother & Child Hlth, Pilar, Argentina
[3] Hosp Pediat Federico Falcon, Outpatient Clin Pediat Gastroenterol & Nutr, Pilar, Argentina
[4] Grp Med Las Lomas, Dept Pediat, San Isidro, Argentina
[5] Sanatorio Ninos Rosario, Rosario, Argentina
[6] Univ Nacl Litoral, Sch Chem Engn, Inst Ind Dairy Sci CONICET UNL, Santa Fe, Argentina