Takeuchi Kyousuke, Tateiwa Hisashi, Hamana Shinya, Yoshida Shigeki, Kitazawa Sohei, Maruo Takeshi
Department of Obstetrics and Gynecology, Kobe University Graduate School of Medicine, Kobe, Japan.
Acta Obstet Gynecol Scand. 2006;85(9):1146-7. doi: 10.1080/00016340600609061.