1 Department of Cardiology, International University of Health and Welfare, Mita Hospital, Tokyo, Japan. Electronic address: daimon@muf.biglobe.ne.jp.
2 Department of Cardiology, Tokyo Bay Urayasu Ichikawa Medical Center, Urayasu, Japan.
3 Department of Cardiovascular Medicine, The University of Tokyo Hospital, Tokyo, Japan.
4 Department of Cardiology, Osaka City General Hospital, Osaka, Japan.
5 Health and Safety Science, Osaka Kyoiku University, Kashiwara, Japan.
6 The Kansai Electric Power Co., Inc. Healthcare Center, Osaka, Japan.
7 Division of Cardiology, Sakurabashi Watanabe Hospital, Osaka, Japan.
8 Department of Cardiovascular Medicine, National Cerebral and Cardiovascular Center, Suita, Japan.
9 Cardiovascular Division, National Hospital Organization Osaka National Hospital, Osaka, Japan.
10 Sydney Medical School Nepean, Faculty of Medicine and Health, The University of Sydney, New South Wales, Australia; Department of Cardiology, Nepean Hospital, Sydney, New South Wales, Australia.
11 Internal Medicine, Kawasaki Medical School General Medical Center, Okayama, Japan.
12 Department of Cardiology, Shimane University Faculty of Medicine, Izumo, Japan.
13 Department of Cardiology, Tokyo Medical University Hachioji Medical Center, Hachioji, Japan.
14 Division of Cardiology, Osaka Saiseikai Senri Hospital, Suita, Japan.