1. Controlled trial of d-penicillamine in severe rheumatoid arthritis;Lancet,1973
2. Wilson's disease; new oral therapy;Walshe;Lancet,1956
3. An assessment of penicillamine therapy in rheumatoid arthritis and the influence of previous gold therapy;Webley;J Rheumatol,1979
4. Does the order of second-line treatment in rheumatoid arthritis matter?;Steven;Br Med J,1982
5. Prior gold therapy does not influence the adverse effects of d-penicillamine in rheumatoid arthritis;Kean;Arthritis Rheum,1982