[1] Tokai Univ, Dept Obstet & Gynecol, Sch Med, Hiratsuka, Kanagawa, Japan
[2] Tokai Univ, Sch Med, Dept Clin Genet, Hiratsuka, Kanagawa, Japan
[3] Tokai Univ, Sch Med, Dept Breast & Endocrine Surg, Hiratsuka, Kanagawa, Japan
[4] Shikoku Med Ctr Children & Adults, Dept Obstet & Gynecol, Zentsuji, Kagawa, Japan