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Authors: Vliet Vlieland TP, van den Ende CH, Breedveld FC, Hazes JMSource: J Rheumatol. 1993 Dec;20(12):2010-4.DOI: Not specifiedLanguage: EnglishAvailability: abstract
Authors: van Tubergen A, Coenen J, Landewé R, Spoorenberg A, Chorus AM, Boonen A, van der Linden S, van der Heijde DSource: Arthritis Rheum. 2002 Feb;47(1):8-16.DOI: 10.1002/art1.10179Language: EnglishAvailability: full text