Updating and Validating the Charlson Comorbidity Index and Score for Risk Adjustment in Hospital Discharge Abstracts Using Data From 6 Countries

H. Quan, B. Li, C. M. Couris, K. Fushimi, P. Graham, P. Hider, J.-M. Januel, V. Sundararajan

Journal: American Journal of Epidemiology

Publisher: Oxford University Press (OUP)

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