Author/Authors :
tanaka, kuniya showa university - fujigaoka hospital - department of gastroenterological and general surgery, Yokohama, Japan , takahashi, yuki showa university - fujigaoka hospital - department of gastroenterological and general surgery, Yokohama, Japan , wakabayashi, tetsuji showa university - fujigaoka hospital - department of gastroenterological and general surgery, Yokohama, Japan
