Aspects relevant for functioning in patients with ankylosing spondylitis...

Boonen A, van Berkel M, Kirchberger I, Cieza A, Stucki G, van der Heijde D. Aspects relevant for functioning in patients with ankylosing spondylitis according to the health professionals: a Delphi study with the ICF as reference. Rheumatology (Oxford). 2009; 48(8): 997-1002. Abstract.