1. Trends in Maternal Mortality: 1990 to 2015. World Health Organization, 2016. Accessed December 12, 2023. https://openknowledge.worldbank.org/entities/publication/b01d9c8a-9113-50e2-9393-4c39e8c0b749
2. Materinskaya smertnost’ v Rossijskoj Federacii v 2015 g. (metodicheskoe pis’mo). Ministerstvo zdravoohraneniya Rossijskoj Federacii, 2016. (In Russ.)
3. Trends in maternal mortality 2000 to 2020: estimates by WHO, UNICEF, UNFPA, World Bank Group and UNDESA/Population Division. Executive summary. World Health Organization, 2023. Accessed December 12, 2023. https://www.who.int/publications/i/item/9789240068759
4. Maternal mortality in the Russian Federation in 2020: the first year of the pandemic
5. Oficial’nyj sajt Vsemirnoj organizacii zdravoohraneniya. Informacionnyj byulleten’ «Materinskaya smertnost’». 2023. (In Russ.). https://www.who.int/ru/news-room/fact-sheets/detail/maternal-mortality