Affiliation: | (1) Department of Obstetrics and Gynecology, Kawasaki Hospital, 3-3-1, Higashiyama-cho, Hyogo-ku, 652 Kobe;(2) Department of Obstetrics and Gynecology, Hyogo Medical Center for Adults, Hyogo;(3) Department of Radiology, Shimane Medical University, Izumo, Japan |