American Journal of Obstetrics and Gynecology
American Journal of Obstetrics and Gynecology > 2010 > 202 > 3 > 214-220
American Journal of Obstetrics and Gynecology > 2010 > 203 > 2 > 115.e1-115.e7
American Journal of Obstetrics and Gynecology > 2010 > 203 > 3 > 224.e1-224.e5
American Journal of Obstetrics and Gynecology > 2010 > 203 > 4 > 319.e1-319.e8