DOI: 10.1055/s-00000089

Ultraschall in der Medizin - European Journal of Ultrasound

References

Arnett FC, Edworthy SM, Bloch DA. et al
The American Rheumatism Association 1987 revised criteria for the classification of rheumatoid arthritis. 
Arthritis Rheum 1988; 31: 315-324  

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