1. Severe maternal morbidity among delivery and postpartum hospitalizations in the United States;Callaghan;Obstet Gynecol,2012
2. Pregnancy-related mortality in the United States, 1998 to 2005;Berg;Obstet Gynecol,2010
3. The national partnership for maternal safety;D'Alton;Obstet Gynecol,2014
4. Saving mothers' lives: reviewing maternal deaths to make motherhood safer: 2006-2008. The eighth report of the confidential enquiries into maternal deaths in the United Kingdom;Cantwell;BJOG,2011
5. Preventing maternal death;Joint Commission on Accreditation of Healthcare Organizations, U.S.A;Sentinel Event Alert,2010