1. Vital signs: pregnancy-related deaths, United States, 2011-2015, and strategies for prevention, 13 states, 2013-2017;Petersen;MMWR Morb Mortal Wkly Rep,2019
2. Global causes of maternal death: a WHO systematic analysis;Say;Lancet Glob Health,2014
3. Pregnancy-related deaths: data from 14 U.S. Maternal mortality review committees, 2008–2017;Davis,2019
4. Report of the American College of Obstetricians and Gynecologists’ Task Force on Hypertension in Pregnancy;Obstet Gynecol,2013
5. Hypertension in pregnancy: diagnosis and management,2019