What is rheumatoid arthritis? Considering consequences of changed classification criteria

van der Helm-van Mil, Annette H M
Zink, Angela

¹Department of Rheumatology, Leiden University Medical Center, Leiden, The Netherlands
²Department of Rheumatology, Erasmus Medical Center, Rotterdam, The Netherlands
³Epidemiology Unit, German Rheumatism Research Centre, Berlin, Germany
⁴Department for Rheumatology and Clinical Immunology, Charité University Medicine, Berlin Germany

Professor Dr Annette H M van der Helm-van Mil, Department of Rheumatology, Leiden University Medical Center, P.O. Box 9600, RC Leiden 2300, The Netherlands; [email protected]

Received May 29, 2016

Received in revised form September 1, 2016

Accepted September 4, 2016

Annals of the Rheumatic Diseases 76(2):p 315-317, February 2017. | DOI: 10.1136/annrheumdis-2016-209629