1996-2001 Assistant professor Wakayama Medical University, Japan.
2001-2001 Research assistant, Baylor College, Houston, TX USA
2002-2002 Visiting professor, Duke University, Durham, NC USA.
2001-2006 Associate professor, Wakayama University, Japan.
2007-2015 Associate professor Kawasaki Medical School, Kurashiki Japan.
2015- Professor Department of Internal Medicine Kawasaki Medical School,
Director: Japan Gastroenterological Endoscopy Society, Japanese Gastroenterological
Association, Japanese Society of Helicobacter Research, Japanese Association of
Councilor: Japanese Society of Gastroenterology, Japanese Society of Internal Medicine"