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

A new method of classifying prognostic comorbidity in longitudinal studies: Development and validation on resea.org. DOI 10.1016/0021-9681(87)90171-8. Mary E. Charlson, Peter Pompei, Kathy…

Mary E. Charlson, Peter Pompei, Kathy L. Aleš, C. Ronald MacKenzie

https://resea.org/10.1016/0021-9681(87)90171-8

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