Author/Authors :
oliveira, claudia p. university of sao paulo - school of medicine - department of gastroenterology (lim-07), Sao Paulo, Brazil , stefano, josé tadeu university of sao paulo - school of medicine - department of gastroenterology (lim-07), Sao Paulo, Brazil , carrilho, flair josé university of sao paulo - school of medicine - department of gastroenterology (lim-07), Sao Paulo, Brazil
