Validation of the ICF for rheumatoid arthritis from the patient perspective using focus groups

Coenen M, Cieza A, Stamm TA, Amann E, Kollerits B, Stucki G.
Validation of the International Classification of Functioning, Disability and Health (ICF) Core Set for rheumatoid arthritis from the patient perspective using focus groups.
Arthritis Res Ther. 2006 May 9;8(4):R84
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