Endoscopic findings in the excluded stomach after Roux-en-Y gastric bypass surgery - Kuga, Rogerio; Safatle-Ribeiro, Adriana Vaz; Faintuch, Joel; Ishida, Robson K.; Furuya Junior, Carlos K.; Garrido Júnior, Arthur Belarmino; Cecconello, Ivan; Ishioka, Shinichi; Sakai, Paulo (Archives of Surgery, 2007)