1. Institute of Nutrition, Department of Nutrition, Faculty of Public Health, University of São Paulo, São Paulo, Brasil
2. Department of Gastroenterology, Clinical Hospital of the University of São Paulo, University of Sao Paulo, São Paulo, Brasil
3. Department of Surgery, Faculty of Medical Sciences, State University of Campinas-UNICAMP, Campinas, SP Brazil
4. Department of Gastroenterology, Clinical Hospital of the University of São Paulo, HC-FMUSP, Laboratory of Experimental Clinical Gastroenterology, LIM 07, University of São Paulo Medical School, São Paulo, Brasil