Perioperative safety indicators: surgery cancellation and immediate postoperative complications. Acta Scientiarum. Health Sciences, [S. l.], v. 42, n. 1, p. e46808, 2020. DOI: 10.4025/actascihealthsci.v42i1.46808. Disponível em: https://www.periodicos.uem.br/ojs/index.php/ActaSciHealthSci/article/view/46808. Acesso em: 29 maio. 2026.