1. British Colombia South western Sweden Rheumatology clinic and estimation Rheumatology clinic Rheumatology clinic Paediatric clinic Total population based;Michigan, Finland,1949
2. This study was supported by grants from the Swedish National Association against Rheumatism and the Gothenburg Association against Arthritis. The secretarial assistance of Ms Ingegerd Jonasson and Ms Inga Jonsson is gratefully acknowledged
3. On a form of chronic joint disease in children;F, Still G.;Med Chir Trans
4. Nomenclature and classification of arthritis in children;H, Wood P.,1978
5. Statistical abstract of Sweden 198211983,1983