1. (Available from Bente Danneskiold-Samso̸e, Department of Rheumatology, Frederiksberg Hospital, Ndr Fasanvej 57, DK-2000 Frederiksberg, Denmark) The Copenhagen Declaration.
2. The American College of Rheumatology 1990 criteria for the classification of fibromyalgia;Wolfe;Arth and Rheum,1990
3. Prevalence of fibromyalgia in the adult Danish population;Prescott;Scand J Rheumatol,1992