1. Wolfe F, Smythe HA, Yunus MB, Bennett RM, Bombardier C, Goldenberg DL, Tugwell P, Campbell SM, Abeles M, Clark P (1990) The American College of Rheumatology 1990 criteria for the classification of fibromyalgia. Report of the multicenter criteria committee. Arthritis Rheum 33:160–172
2. Wolfe F, Ross K, Anderson J, Russell I, Hebert L (1995) The prevalence and characteristics of fibromyalgia in the general population. Arthritis Rheum 38:19–28
3. Jain A, Carruthers B, van de Sande M, Barron S, Donaldson C, Dunne J, Gingrich E, Heffez D, Leung F, Malone D, Roman T, Russell I, Saul D, Seibel D (2004) Fibromyalgia syndrome: Canadian clinical working case definition, diagnostic and treatment protocols—a consensus document. J Musculoskeletal Pain 11:3–107
4. Branco JC, Bannwarth B, Failde I, Abello Carbonell J, Blotman F, Spaeth M, Saraiva, F, Nacci, F, Thomas, E, Caubere, JP (2009) Prevalence of fibromyalgia: a survey in five European countries. Semin Arthritis Rheum, 26 Feb 2009 [epub ahead of print]
5. White KP, Speechley M, Harth M, Ostbye T (1999) The London fibromyalgia epidemiology study: the prevalence of fibromyalgia syndrome in London, Ontario. J Rheumatol 26:1570–1576