1. Tikkanen R., Gunja M.Z., FitzGerald M., Zephyrin L. Maternal mortality and mortality care in the United States compared to 10 other developed countries. The Commonwealth Fund. https://www.commonwealthfund.org/publications/issue-briefs/2020/nov/maternal-mortality-maternity-care-us-compared-10-countries#:∼:text=Women%20in%20the%20U.S.%20are,income%20countries%20(Exhibit%201) Accessed December 30, 2020.
2. Trends in maternal mortality 2000 to 2017: estimates by WHO, UNICEF, UNFPA, World Bank Group and the United Nations Population Division. Geneva: World Health Organization; 2019. Licence: CC BY-NC-SA 3.0 IGO. https://www.who.int/reproductivehealth/publications/maternal-mortality-2000-2017/en/ Accessed December 30, 2020.
3. Centers for Disease Control and Prevention. Division of Reproductive Health, National Center for Chronic Disease Prevention and Health Promotion. Pregnancy mortality surveillance system. https://www.cdc.gov/reproductivehealth/maternal-mortality/pregnancy-mortality-surveillance-system.htm Accessed December 30, 2020.
4. A case-control study of peripartum cardiomyopathy using the Rochester Epidemiology Project;Douglass;J Cardiac Failure,2021
5. Pregnancy-associated heart failure with preserved ejection fraction: risk factors and maternal morbidity;Briller;J Cardiac Failure,2021