Comparison of etanercept and methotrexate, alone and combined, in the treatment of rheumatoid arthritis: Two‐year clinical and radiographic results from the TEMPO study, a double‐blind, randomized trialDésirée van der Heijde, Vicente Rodrı́guez-Valverde, Saeed Fatenejad et al.|Arthritis & Rheumatism|2006Cited by 542