RT Journal Article SR Electronic T1 Effect of D-penicillamine on serum immunoglobulins and rheumatoid factor. JF Annals of the Rheumatic Diseases JO Ann Rheum Dis FD BMJ Publishing Group Ltd and European League Against Rheumatism SP 50 OP 52 DO 10.1136/ard.32.1.50 VO 32 IS 1 A1 Bluestone, R A1 Goldberg, L S YR 1973 UL http://ard.bmj.com/content/32/1/50.abstract AB