@article{articleda9e70d6, title = {Endoscopic and ultrasonographic evaluation before and after Roux-en-Y gastric bypass for morbid obesity}, author = {Teivelis, Marcelo Passos and Faintuch, Joel and Ishida, Robson and Sakai, Paulo and Bresser, Adriano and Gama-Rodrigues, Joaquim José}, year = {2007}, doi = {10.1590/s0004-28032007000100003}, journal = {Arquivos de Gastroenterologia} }