Yamanaka Yoshihiko, Takeuchi Kyousuke, Oomori Shinya, Oda Nanae, Ashitani Naoko, Maruo Takeshi
Department of Obstetrics and Gynecology, Kobe University Graduate School of Medicine, 7-5-1 Kusunoki-cho, Chuo-ku, Kobe 650-0017, Japan.
Acta Obstet Gynecol Scand. 2005 Sep;84(9):920-1. doi: 10.1111/j.0001-6349.2005.0414c.x.