[1] Kwandong Univ, Coll Med, Cheil Gen Hosp, Dept Obstet & Gynecol, Seoul 100380, South Korea
[2] Kwandong Univ, Coll Med, Womens Healthcare Ctr, Seoul 100380, South Korea
[3] Kwandong Univ, Coll Med, Cheil Gen Hosp, Med Genet Lab, Seoul 100380, South Korea
[4] Hanyang Univ, Coll Med, Dept Med Genet, Seoul 133791, South Korea