[1] Int Univ Hlth & Welf, Grad Sch Hlth & Welf Sci, Dept Genet Counseling, 4-1-26 Minato Ku, Tokyo 1078402, Japan
[2] Showa Univ, Sch Med, Dept Obstet & Gynecol, Tokyo, Japan
[3] Natl Hosp Org Tokyo Med Ctr, Med Genet Ctr, Tokyo, Japan
[4] Nagoya City Univ, Div Clin & Mol Genet, Dept Obstet & Gynecol, Grad Sch Med Sci, Nagoya, Aichi, Japan
[5] Jikei Univ, Sch Med, Dept Obstet & Gynecol, Tokyo, Japan
[6] Kyoto Univ Hosp, Clin Genet Unit, Kyoto, Japan
[7] Nagasaki Univ, Grad Sch Biomed Sci, Dept Obstet & Gynecol, Nagasaki, Japan
[8] Hyogo Coll Med, Dept Obstet & Gynecol, Nishinomiya, Hyogo, Japan
[9] Tohoku Univ, Miyagi Childrens Hosp, Dept Maternal & Fetal Med, Grad Sch Med, Sendai, Miyagi, Japan
[10] Yokohama City Univ Med, Dept Clin Genet, Yokohama, Kanagawa, Japan
[11] Saitama Med Univ Hosp, Dept Obstet & Gynecol, Saitama, Japan
[12] Sapporo Med Univ, Dept Obstet & Gynecol, Sch Med, Sapporo, Hokkaido, Japan
[13] Iwate Med Univ, Sch Med, Dept Clin Genet, Morioka, Iwate, Japan
[14] Toho Univ, Fac Med, Dept Obstet & Gynecol, Tokyo, Japan
[15] Tokyo Womens Med Univ Hosp, Perinatal Med Ctr, Tokyo, Japan
[16] Fujita Hlth Univ, Dept Obstet & Gynecol, Toyoake, Aichi, Japan
[17] Osaka Med Ctr, Dept Obstet, Osaka, Japan
[18] Res Inst Maternal & Child Hlth, Osaka, Japan
[19] Kobe Univ, Grad Sch Med, Dept Obstet & Gynecol, Kobe, Hyogo, Japan
[20] Univ Tokushima, Fac Med, Dept Obstet & Gynecol, Tokushima, Japan
[21] Shikoku Med Ctr Children & Adults, Dept Obstet & Gynecol, Zentsuji, Kagawa, Japan
[22] Ehime Univ, Dept Obstet & Gynecol, Sch Med, Matsuyama, Ehime, Japan
[23] Natl Hosp Org Kyushu Med Ctr, Dept Obstet & Gynecol, Clin Res Inst, Fukuoka, Japan
[24] Chiba Univ Hosp, Dept Maternal Fetal Med, Chiba, Japan
[25] Kumamoto Univ, Dept Obstet & Gynecol, Kumamoto, Japan
[26] Oita Univ, Fac Med, Dept Mol Pathol, Oita, Japan
[27] Natl Ctr Child Hlth & Dev, Ctr Maternal Fetal Neonatal & Reprod Med, Tokyo, Japan