著者名,論文名,雑誌名,ISSN,出版者名,出版日付,巻,号,ページ,URL,URL(DOI) Mary E. Charlson and Peter Pompei and Kathy L. Ales and C.Ronald MacKenzie,A new method of classifying prognostic comorbidity in longitudinal studies: Development and validation,Journal of Chronic Diseases,0021-9681,Elsevier BV,1987-01,40,5,373-383,https://cir.nii.ac.jp/crid/1362825893344056704,https://doi.org/10.1016/0021-9681(87)90171-8