title: Is there a best way to measure co-morbidity?
authors.forename: Loreto
authors.initials: L
authors.lastname: Carmona
mesh_terms: D059026:Diagnostic Self Evaluation; D005260:Female; D006801:Humans; D008297:Male; D012720:Severity of Illness Index; D013167:Spondylitis, Ankylosing / Q000534:rehabilitation*; D011795:Surveys and Questionnaires / Q000592:standards*