Search results for: Ruth Fretts
The Lancet > 2011 > 377 > 9778 > 1703-1717
The Lancet > 2011 > 377 > 9774 > 1331-1340
BMC Pregnancy and Childbirth > 2009 > 9 > 1 > 1-10
American Journal of Obstetrics and Gynecology > 2003 > 189 > 2 > 428-434