Author/Authors :
yano, yoshihiko center for infectious diseases, Japan , yano, yoshihiko kobe university graduate school of medicine - department of gastroenterology, japan , seo, yasushi kobe university graduate school of medicine - department of gastroenterology,, Japan , azuma, takeshi kobe university graduate school of medicine - department of gastroenterology, japan , hayashi, yoshitake kobe university graduate school of medicine - department of gastroenterology, Japan , hayashi, yoshitake center for infectious diseases, Japan