title: A double-blind, controlled study of lymphoplasmapheresis versus sham apheresis in rheumatoid arthritis.
mesh_terms: D000328:Adult; D000368:Aged; D000553:Ambulatory Care; D001172:Arthritis, Rheumatoid / Q000097:blood / Q000175:diagnosis / Q000628:therapy*; D002986:Clinical Trials as Topic; D004311:Double-Blind Method; D005260:Female; D006801:Humans; D008212:Lymphocyte Depletion; D008875:Middle Aged; D010956:Plasmapheresis; D011897:Random Allocation