1. Center for Disease Control and Prevention. Maternal Mortality Rates in the United States, 2020. 2022. https://www.cdc.gov/nchs/data/hestat/maternal-mortality/2020/maternal-mortality-rates-2020.htm. Accessed August 2022.
2. Center for Disease Control and Prevention. Pregnancy Mortality Surveillance System. 2022. https://www.cdc.gov/reproductivehealth/maternal-mortality/pregnancy-mortality-surveillance-system.htm. Accessed August 2022.
3. World Health Organization. Maternal Mortality. 2019. https://www.who.int/news-room/fact-sheets/detail/maternal-mortality. Accessed August 2020
4. Howell EA, Zeitlin J. Quality of care and disparities in obstetrics. Obstet Gynecol Clin North Am. 2017. https://doi-org.proxygw.wrlc.org/https://doi.org/10.1016/j.ogc.2016.10.002
5. GBD 2015 Maternal Mortality Collaborators. Global, regional, and national levels of maternal mortality, 1990–2015: a systematic analysis for the Global Burden of Disease Study 2015 [published correction appears in Lancet. 2017. Lancet. 2016. https://doi-org.proxygw.wrlc.org/10.1016/S0140-6736(16)31470-2