Search results for: Xin Yang
European Journal of Obstetrics and Gynecology > 2015 > 193 > Complete > 92-95
European Journal of Obstetrics and Gynecology > 2013 > 170 > 1 > 225-228
European Journal of Obstetrics and Gynecology > 2010 > 152 > 2 > 214-217
European Journal of Obstetrics and Gynecology > 2009 > 144 > 2 > 149-152