ACADEMIC AND HOSPITAL APPOINTMENTS: 1985-1987 Clinical Fellow in Cardiology, Miami Heart Institute, Miami, Florida, USA 1988-1990 Co-Director in Cardiology, Toride Kyodo General Hospital, Toride, Ibaraki, Japan 1990-1993 Co-Director of Cardiovascular Graduate Resident Education, Tokyo Medical and Dental University, Tokyo, Japan 1994-1999 Director, 2nd Division of Cardiology (Arrhythmology), Gunma Prefectural Cardiovascular Center, Gunma, Japan 1999-2010 Director, CCU, Yokohama Rosai Hospital, Kanagawa, Japan 2003-2005 Assistant Professor of Cardiology, Iwate Medical University, Morioka, Japan 2003-2011 Assistant Professor of Cardiology, Tokai University, School of Medicine, Isehara, Japan 2004-2012 Clinical Professor of Cardiology, Tokyo Medical and Dental University, Tokyo, Japan 2010-2012 Director, Heart Rhythm Department, Yokohama Rosai Hospital, Kanagawa, Japan 2013- Professor, Department of Cardiology, Faculty of Medicine, University of Tsukuba