1. Department of Obstetrics and Gynecology, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan.
2. Clinical Genetics, Juntendo University, Graduate School of Medicine, Tokyo, Japan.
3. Department of Hygiene, Public Health, and Preventative Medicine, Showa University School of Medicine, Tokyo, Japan.
4. Department of Obstetrics and Gynecology, School of Medicine, Fujita Health University, Toyoake, Japan.
5. Department of Molecular Genetics, Brain Research Institute, Niigata University, Niigata, Japan.
6. Division of Breast Surgical Oncology, Department of Surgery, Showa University School of Medicine, Tokyo, Japan.