@article{souza_pinheiro_coeli_camargo jr._2008,  title={The Charlson comorbidity index (CCI) for adjustment of hip fracture mortality in the elderly: analysis of the importance of recording secondary diagnoses},  volume={24},  ISSN={0102-311X},  url={https://doi.org/10.1590/S0102-311X2008000200010},  DOI={10.1590/S0102-311X2008000200010},  number={2},  journal={Cadernos de Saúde Pública},  publisher={Escola Nacional de Saúde Pública Sergio Arouca, Fundação Oswaldo Cruz},  author={Souza, Rômulo Cristovão de and Pinheiro, Rejane Sobrino and Coeli, Cláudia Medina and Camargo Jr., Kenneth Rochel de},  year={2008},  month={Feb},  pages={315–322} }