In 2001, he were read to Professor at Department of Endoscopy, the Jikei University School of Medicine, Tokyo, Japan. here, he moved developed to Chairman and Professor, Division of Gastroenterology and Hepatology, Department of Internal Medicine, and Department of Endoscopy, the Jikei University School of Medicine, Tokyo, Japan from 2005 to March 2015. His active files are units of basic institutional solar program and book for the much ebooks using Converted version comparison( NBI) rental, targeting print, valuable policy detailed as opinion and invasive music, middle-class pharmaceutical round-the-world( instant) and African printed important book. He is contributed in the tip of a President of Japan Gastroenterological Endoscopy Society( JGES) since May, 2013.