Kirwan John R, Boers Maarten
University of Bristol Academic Rheumatology Unit, Bristol Royal Infirmary, Bristol BS8 2UR, UK.
Department of Epidemiology and Biostatistics, VU University Medical Center, Amsterdam, Netherlands.
Lancet. 2014 Jan 25;383(9914):288-9. doi: 10.1016/S0140-6736(13)61941-8. Epub 2013 Oct 26.