Affiliation: | 1. Department of Obstetrics and Gynecology, Gifu University School of Medicine, 40 Tsukasa-machi, 500, Gifu-city, Gifu, Japan 2. Department of Pathology, Gifu University School of Medicine, 40 Tsukasa-machi, 500, Gifu-city, Gifu, Japan 3. Division of Central Laboratory, Gifu University School of Medicine, 40 Tsukasa-machi, 500, Gifu-city, Gifu, Japan
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