Search results for: Greg Ryan
American Journal of Obstetrics and Gynecology > 2006 > 195 > 5 > 1388-1395
American Journal of Obstetrics and Gynecology > 2005 > 192 > 3 > 892-902
American Journal of Obstetrics and Gynecology > 2002 > 186 > 5 > 1085-1090