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Toshihiko NAKAO
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Akiyoshi SUGIHASHI
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Nobuhiko SAGA
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Nobuo TSUNODA
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Keiichiro KAWATA
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Author's Organization:Department of Veterinary Obstetrics and Gynecology, School of Veterinary Medicine, College of Dairying, Rakunogakuen University Department of Veterinary Obstetrics and Gynecology, School of Veterinary Medicine, College of Dairying, Rakunogakuen University Department of Veterinary Obstetrics and Gynecology, School of Veterinary Medicine, College of Dairying, Rakunogakuen University Department of Veterinary Obstetrics and Gynecology, School of Veterinary Medicine, College of Dairying, Rakunogakuen University Department of Veterinary Obstetrics and Gynecology, School of Veterinary Medicine, College of Dairying, Rakunogakuen University