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Environmental risk factors differ between rheumatoid arthritis with and without auto-antibodies against cyclic citrullinated peptides

Merete Pedersen*, Søren Jacobsen, Mette Klarlund, Bo V Pedersen, Allan Wiik, Jan Wohlfahrt and Morten Frisch

  • * Corresponding author: Merete Pedersen

Arthritis Research & Therapy 2006, 8:R133  doi:10.1186/ar2022

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