RT Journal Article SR Electronic T1 Nucleoprotein-Latex Agglutination Test in Connective Tissue Diseases JF Annals of the Rheumatic Diseases JO Ann Rheum Dis FD BMJ Publishing Group Ltd and European League Against Rheumatism SP 255 OP 258 DO 10.1136/ard.18.3.255 VO 18 IS 3 A1 Fessel, W. J. YR 1959 UL http://ard.bmj.com/content/18/3/255.abstract AB