TY  - JOUR
TI  - A new method of classifying prognostic comorbidity in longitudinal studies: Development and validation
AU  - Mary E. Charlson
AU  - Peter Pompei
AU  - Kathy L. Aleš
AU  - C. Ronald MacKenzie
PY  - 1987
JO  - Journal of Chronic Diseases
DO  - 10.1016/0021-9681(87)90171-8
UR  - https://doi.org/10.1016/0021-9681(87)90171-8
ER  -