Comment on

• Comparison of patients with juvenile psoriatic arthritis and nonpsoriatic juvenile idiopathic arthritis: how different are they?

  Butbul YA, Tyrrell PN, Schneider R, Dhillon S, Feldman BM, Laxer RM, Saurenmann RK, Spiegel L, Cameron B, Tse SM, Silverman ED. Butbul YA, et al. J Rheumatol. 2009 Sep;36(9):2033-41. doi: 10.3899/jrheum.080674. Epub 2009 Jul 31. J Rheumatol. 2009. PMID: 19648305