A trial of etanercept, a recombinant tumor necrosis factor receptor:Fc fusion protein, in patients with rheumatoid arthritis receiving methotrexate.
N Engl J Med. 1999 Jan 28;340(4):253-9. doi: 10.1056/NEJM199901283400401.
N Engl J Med. 1999.
PMID: 9920948
Clinical Trial.