Affiliation: | (1) Department of Gastroenterology (LIM/37-LIM/07), Medical School, University of Sao Paulo, R. Peixoto Gomide, 515 13 andar, 01409001 Sao Paulo, Sao Paulo, Brazil;(2) Department of Physiology and Biophysics, Institute of Biomedical Sciences, University of Sao Paulo, Sao Paulo, Brazil; |