Birth rate analysis in the state of Paraná from 2011 to 2021: trends in fertility rates, maternal age, and the influence of education on delivery type. RSD [Internet]. 2023 Jun. 9 [cited 2025 Jun. 28];12(6):e7512642028. Available from: https://ojs34.rsdjournal.org/index.php/rsd/article/view/42028