A new method of classifying prognostic comorbidity in longitudinal studies: Development and validation

Journal of Chronic Diseases - Tập 40 - Trang 373-383 - 1987
Mary E. Charlson1, Peter Pompei1, Kathy L. Ales1, C.Ronald MacKenzie1
1Clinical Epidemiology Unit, Department of Medicine, Cornell University Medical College, 1300 York Avenue, New York, NY 10021, U.S.A.

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