Nakajima E, Ishigouoka T, Yoshida T, Sato T, Miyamoto T, Shirai M, Sengoku K
Department of Obstetrics and Gynecology, Asahikawa Medical University , Asahikawa , Japan.
J Obstet Gynaecol. 2015 Apr;35(3):311-3. doi: 10.3109/01443615.2014.951608. Epub 2014 Aug 27.