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Sawako Shibata
Department of Pediatrics, Moriya Daiichi General Hospital
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Michio Nagata
Department of Pathology, Institute of Clinical Medicine, University of Tsukuba
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Midori Shigeta
Department of Pediatrics, Tsukuba Souai Hospital
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Teruo Watanabe
Department of Pathology, Institute of Basic Medicine, University of Tsukuba