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A new method of classifying prognostic comorbidity in longitudinal studies: Development and validation
Mary E. Charlson, Peter Pompei, Kathy L. Ales, C.Ronald MacKenzieVolume:
40
Year:
1987
Language:
english
Pages:
384
DOI:
10.1016/0021-9681(87)90171-8
File:
PDF, 1.03 MB
english, 1987