Santos de Jesus AP, Okuno MFP, Campanharo CRV, Lopes MCBT, Batista REA. Association of the Charlson index with risk classification, clinical aspects, and emergency outcomes*. Rev. Esc. Enferm. USP [Internet]. 2022 Jan. 4 [cited 2024 Jul. 17];56:e20200162. Available from: https://revistas.usp.br/reeusp/article/view/194576