Chmielewski, Piotr Paweł, Aleksandra Żebrak, and Sławomir Kozieł. 2021. “Exploring the Effects of Birth Order on Human Lifespan in Polish Historical Populations, 1738–1968”. Anthropological Review 84 (4):383-94. https://doi.org/10.2478/anre-2021-0026.