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Masanori Yamamoto1, Yoshihiko Seino1 and Kyoichi Mizuno21Department of Cardiology, Cardiovascular Center, Nippon Medical School Chiba Hokusoh Hospital
2Department of Internal Medicine, Graduate School of Medicine, Nippon Medical School
Correspondence to Yoshihiko Seino, Department of Cardiology, Cardiovascular Center, Nippon Medical School ChibaHokusoh Hospital, 1715 Kamagari, Imba-mura, Imba-gun, Chiba 270―1694, JapanJournal Website(http:��www.nms.ac.jp�jmanms�)