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Shigeo Umezawa
Department of Int ernal Medicine, Tsuchiura Kyodo Hospital
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Keiichi Sugimoto
Department of Int ernal Medicine, Tsuchiura Kyodo Hospital
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Hideomi Fujiwara
Department of Int ernal Medicine, Tsuchiura Kyodo Hospital
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Koichi Taniguchi
The 2nd Department of Internal Medicine, Tokyo Medical and Dental University