1. Departments of Endocrinology and Metabolism and Teratology (A.S., S.H.), and Genetics Research Institute of Environmental Medicine Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8601, Japan
2. Department of Surgery II, Nagoya University School of Medicine (T.I., H.F.), 65 Tsurumai-cho, Showa-ku, Nagoya 466-8550, Japan