American Journal of Obstetrics and Gynecology
American Journal of Obstetrics and Gynecology > 2001 > 184 > 6 > 1060-1063
American Journal of Obstetrics and Gynecology > 2005 > 193 > 3 Supplement > 952-956
American Journal of Obstetrics and Gynecology > 2007 > 196 > 4 > 400.e1-400.e8
American Journal of Obstetrics and Gynecology > 2008 > 199 > 4 > 433.e1-433.e8
American Journal of Obstetrics and Gynecology > 2009 > 200 > 5 > 530.e1-530.e7
American Journal of Obstetrics and Gynecology > 2011 > 204 > 6 > 503.e1-503.e12
American Journal of Obstetrics and Gynecology > 2015 > 213 > 5 > 695.e1-695.e13