Authors: L S De Clerck; N J Struyf; C H Bridts; F C Breedveld; M L Westedt; A Cats; W J Stevens Journal: Clin Rheumatol Date: 1990-06 Impact factor: 2.980
Authors: Y T Konttinen; S Tuominen; M Segerberg-Konttinen; P Jungell; M J Malmström; M Grönblad; O Guven; S Santavirta; P Panula Journal: Ann Rheum Dis Date: 1990-09 Impact factor: 19.103