Aug 2009–present	Tokyo Women's Medical University, Institute of Gastroenterology (assistant)
Aug 2006–Aug 2009	Dept. of Cellular & Molecular Medicine in University of California, San Diego, Howard Hughes Medical Institute (HHMI)
Jun 2006–Sep 2006	Tokyo Women's Medical University, Institute of Gastroenterology (assistant)
Jun 2003–May 2006	International Medical center of Japan
Jun 2001–May 2003	Tokyo Women's Medical University, Institute of Gastroenterology (assistant)
Jun 2000–May 2001	Saitama Municipal Hospital
Jun 1999–May 2000	Shiseikai 2nd Hospital
Apr 1997–May 1999	Tokyo Women's Medical University, Institute of Gastroenterology (resident)