Updating and Validating the Charlson Comorbidity Index and Score for Risk Adjustment in Hospital Discharge
Hude Quan, Bing Li, Chantal M. Couris, Kiyohide Fushimi, Patrick Graham, Phil Hider, Jean-Marie Januel and Vijaya Sundararajan:
Updating and Validating the Charlson Comorbidity Index and Score for Risk Adjustment in Hospital Discharge Abstracts Using Data From 6 Countries
Am. J. Epidemiol. (2011) 173(6): 676-682 first published online February 17, 2011, Oxford University Press
[DOI: 10.1093/aje/kwq433]

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