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Yoshiyuki KURATSU
Technical Research Laboratory, Hofu Plant, Kyowa Hakko Kogyo Co., Ltd.
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Hiroshi HAGINO
Technical Research Laboratory, Hofu Plant, Kyowa Hakko Kogyo Co., Ltd. Present address: Tokyo Research Laboratory, Kyowa Hakko Kogyo Co., Ltd.
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Keiichi INUZUKA
Technical Research Laboratory, Hofu Plant, Kyowa Hakko Kogyo Co., Ltd.