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Comparative effectiveness of tumour necrosis factor α inhibitors in combination with either methotrexate or leflunomide
  1. Correspondence to Dr A Strangfeld, German Rheumatism Research Centre, Epidemiology Unit, Chariteplatz 1, 10117 Berlin, Germany; Strangfeld{at}drfz.de
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Strangfeld A, Hierse F, Kekow J, et al
Comparative effectiveness of tumour necrosis factor α inhibitors in combination with either methotrexate or leflunomide

Publication history

  • Accepted December 16, 2008
  • First published January 6, 2009.
Online issue publication 
November 12, 2009

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