title: Rheumatoid arthritis.
authors: University of Leeds, Leeds, United Kingdom.
authors: Paul
authors: P
authors: Emery
authors: Maria E
authors: ME
authors: Suarez-Almazor
mesh_terms: D001172:Arthritis, Rheumatoid / Q000175:diagnosis / Q000188:drug therapy* / Q000453:epidemiology; D006801:Humans; D015994:Incidence; D015995:Prevalence; D011379:Prognosis; D012307:Risk Factors