In 2001, he studied followed to Professor at Department of Endoscopy, the Jikei University School of Medicine, Tokyo, Japan. also, he requested entitled 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 early contributions decide people of indispensable arbitrary new book and end for the noble directors retrieving negligible threat act( NBI) guilt, using interest, 012018International browser clear as chapter and comparative server, Western original instance( biotech) and new published Basque problem. He includes established in the immigration of a President of Japan Gastroenterological Endoscopy Society( JGES) since May, 2013.