Hata Toshiyuki, Inubashiri Eisuke, Kanenishi Kenji, Akiyama Masashi, Tanaka Hirokazu, Yanagihara Toshihiro
Departments of Perinatology and Gynecology, Kagawa University School of Medicine, 1750-1 Ikenobe, Miki, Kagawa 761-0793, Japan.
J Ultrasound Med. 2004 Nov;23(11):1517-20. doi: 10.7863/jum.2004.23.11.1517.