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Elevated levels of fibrinogen-derived endogenous citrullinated peptides in synovial fluid of rheumatoid arthritis patients

Reinout Raijmakers*, Joyce JBC van Beers, Mahmoud El-Azzouny, Natasja FC Visser, Borut Božič, Ger JM Pruijn and Albert JR Heck*

Arthritis Research & Therapy 2012, 14:R114  doi:10.1186/ar3840