Paim, Ariane Dias, Elisa Cordeiro Apolinário, Juliana Fischman Zampieri, and Mariza Machado Kluck. 2009. “Primary Cesarean Rate at Hospital De Clínicas De Porto Alegre”. Clinical and Biomedical Research 28 (3). https://seer.ufrgs.br/index.php/hcpa/article/view/5642.