ACME: an admission case-mix system for the elderly.
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D000368:Aged; D000369:Aged, 80 and over; D003953:Diagnosis-Related Groups / Q000706:statistics & numerical data*; D015577:Geriatric Assessment / Q000706:statistics & numerical data*; D006801:Humans; D007902:Length of Stay / Q000706:statistics & numerical data; D013030:Spain