RT Journal Article SR Electronic T1 Laboratory Diagnostic Procedures in the Rheumatic Diseases JF Annals of the Rheumatic Diseases JO Ann Rheum Dis FD BMJ Publishing Group Ltd and European League Against Rheumatism SP 547 OP 547 DO 10.1136/ard.34.6.547-a VO 34 IS 6 A1 Nicholls, Anne YR 1975 UL http://ard.bmj.com/content/34/6/547.1.abstract AB