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

JOURNAL ARTICLE published 15 March 2011 in American Journal of Epidemiology

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