Mar 1994 Graduated from The Jikei University School of Medicine, Tokyo Japan July 1999 Staff, Dept. of Surgery, The Jikei University School of Medicine, Tokyo Japan Jan 2006 Research fellow, Department of Surgery, Creighton University Medical Center, Omaha Nebraska, USA Apr 2008 Staff, Dept. of Surgery, The Jikei University School of Medicine, Tokyo Japan Jan 2013 Assistant professor, Dept. of Surgery, The Jikei University School of Medicine, Tokyo Japan Apr 2018 Associate professor, Dept. of Surgery, The Jikei University School of Medicine, Tokyo Japan Apr 2023 Professor, Dept. of Surgery, The Jikei University School of Medicine, Tokyo Japan