Identification of the most common problems by patients with ankylosing spondylitis using the ICF
van Echteld I, Cieza A, Boonen A, Stucki G, Zochling J, Braun J, van der Heijde D.
Identification of the most common problems by patients with ankylosing spondylitis using the International Classification of Functioning, Disability and Health.
J Rheumatol. 2006;33(12):2475-2483.