Resident in Osaka University Hospital, Osaka, Japan, 1996-1997 Resident in Kinki Central Hospital, Hyogo, Japan, 1997-1998 Ph.D. Student, Osaka University, Osaka, Japan, 1998-2002 Research Associate, The University of Chicago, IL, USA, 2002-2005 Assistant Professor, Osaka University, Osaka, Japan, 2005-2007 Staff, Osaka medical Center for Cancer and CVD, Osaka, Japan, 2007-2012 Associate Professor, Kyoto Prefectural University of Medicine, Kyoto, Japan, 2012-2015 Associate Professor, Kansai Medical University, Osaka, Japan, 2015-2023 Professor, Kansai Medical University, Osaka, Japan, 2023-present