Ogawa Masaki, Sato Akira, Yasuda Kazuhito, Shimizu Dai, Hosoya Naoko, Tanaka Toshinobu
Department of Obstetrics and Gynecology, Akita University School of Medicine, Hondo 1-1-1, Akita 010-8543, Japan.
Acta Obstet Gynecol Scand. 2004 Jan;83(1):115-6. doi: 10.1111/j.1600-0412.2004.0033d.x.