1. Alliance for the Canadian Arthritis Program (2005) Arthritis isn't a big deal...until you get it: ask 4 million Canadians. Report from the Summit on Standards for Arthritis Prevention and Care, November 1–2 2005, Ottawa, Ontario, Canada [
http://www.arthritisalliance.ca/docs/ SAPC%20Full%20Report%2020060331%20en.pdf
] (accessed 13 November 2008)
2. WHO (2001) International Classification of Functioning, Disability and Health. Geneva: World Health Organization [
http://www.who.int/classifications/ icf/en/
] (accessed 13 November 2008)
3. Badley EM (2008) Enhancing the conceptual clarity of the activity and participation components of the International Classification of Functioning, Disability and Health. Soc Sci Med 66: 2335–2345
4. Boonen A (2006) A review of work-participation, cost-of-illness and cost-effectiveness studies in ankylosing spondylitis. Nat Clin Pract Rheumatol 2: 546–553
5. Boonen A et al. (2001) Work status and its determinants among patients with ankylosing spondylitis. A systematic literature review. J Rheumatol 28: 1056–1062