Validation of the comprehensive ICF core set for rheumatoid arthritis: the perspective of physical therapists

Kirchberger I, Glaessel A, Stucki G, Cieza A.
Validation of the comprehensive international classification of functioning, disability and health core set for rheumatoid arthritis: the perspective of physical therapists.
Phys Ther. 2007 Apr; 87(4): 368-84.