Niigata University (M.D. 1995) Tokyo Women's Medical University (Ph.D. 2006) Tokyo Women's Medical University Cardiovascular Surgery Residency (1995-2002) Research Fellow McGowan Institute of Regenerative Medicine, University of Pittsburgh (2003-2004) Clinical Fellow, Artificial Heart and Thoracic Transplantation, UPMC (2004-2006) Clinical Fellow, Advanced Adult Cardiac Surgery, University of Pittsburgh Medical Center (2006-2008) Assistant Professor, Tokyo Women's Medical University Cardiovascular Surgery (2009-2016) Chief, Department of Cardiovascular Surgery, Hokkaido Cardiovascular Hospital (2016-) Clinical Professor, Department of Cardiovascular Surgery, Sapporo Medical University (2018-) Clinical Teaching Professor, Department of Cardiovascular Surgery, Asahikawa Medical University (2019-)