van der Helm-van Mil Annette H M, Zink Angela
Department of Rheumatology, Leiden University Medical Center, Leiden, The Netherlands.
Department of Rheumatology, Erasmus Medical Center, Rotterdam, The Netherlands.
Ann Rheum Dis. 2017 Feb;76(2):315-317. doi: 10.1136/annrheumdis-2016-209629. Epub 2016 Sep 22.