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Shigeo Umezawa
Cardiology, Department of Internal Medicine, Tsuchiura Kyodo Hospital
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Takanori Shirai
Cardiology, Department of Internal Medicine, Tsuchiura Kyodo Hospital
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Hideomi Fujiwara
Cardiology, Department of Internal Medicine, Tsuchiura Kyodo Hospital
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Hideo Nagaoka
Department of Cardiovascular Surgery, Tsuchiura Kyodo Hospital
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Tetsushi Furukawa
The Second Department of Internal Medicine, Tokyo Medical and Dental University
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Koichi Taniguchi
The Second Department of Internal Medicine, Tokyo Medical and Dental University