Randomised double-blind comparison of chimeric monoclonal antibody to tumour necrosis factor alpha (cA2) versus placebo in rheumatoid arthritis - Elliott, MJ; Maini, RN; Feldmann, M; Kalden, JR; Antoni, C; Smolen, JS; Leeb, B; Breedveld, FC; Macfarlane, JD; Bijl, H (Lancet, 1994)