Averbach Marcelo, Marques Oswaldo Wiliam, Corrêa Paulo A F P, Cappellanes Carlos Alberto, Hashiba Kiyoshi
Endoscopy Unit, Hospital Sírio Libanês, São Paulo, Brazil.
Gastrointest Endosc. 2006 Dec;64(6):1008; discussion 1009. doi: 10.1016/j.gie.2006.05.023. Epub 2006 Aug 21.