van Gaalen Floris A, Verduijn Willem, Roelen Dave L, Huizinga Tom W J, van der Heijde Désiree, Toes René E M
Department of Rheumatology, Leiden University Medical Center, , Leiden, The Netherlands.
Ann Rheum Dis. 2014 Mar;73(3):633-4. doi: 10.1136/annrheumdis-2013-204149. Epub 2013 Nov 20.