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Performance of classification criteria for peripheral spondyloarthritis and psoriatic arthritis in the Leiden early arthritis cohort
  1. Correspondence to Professor Désirée van der Heijde, Department of Rheumatology, Leiden University Medical Center, PO Box 9600, Leiden, The Netherlands; mail{at}dvanderheijde.nl
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van den Berg R, van Gaalen F, van der Helm-van Mil A, et al
Performance of classification criteria for peripheral spondyloarthritis and psoriatic arthritis in the Leiden early arthritis cohort

Publication history

  • Accepted February 26, 2012
  • First published April 13, 2012.
Online issue publication 
July 14, 2012

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