Original Article
Rheumatoid factor testing in Spanish primary care: A population-based cohort study including 4.8 million subjects and almost half a million measurements
Uso del factor reumatoide en atención primaria en España: estudio de cohortes poblacionales incluyendo 4,8 millones de participantes y casi medio millón de mediciones
Klara Morsleya, Anne Millerb, Raashid Luqmanic,
, Francesc Fina-Avilesd, Muhammad Kassim Javaidc, Christopher J. Edwardse, Rafael Pinedo-Villanuevac,f, Manuel Medinad, Sebastian Calerod, Cyrus Cooperc,f,g, Nigel Ardenc, Daniel Prieto-Alhambrac,h
a Department of Rheumatology, Royal Berkshire Hospital, The Royal Berkshire NHS Foundation Trust, United Kingdom
b Department of Rheumatology, Nuffield Orthopaedic Centre, Oxford University Hospitals NHS Trust, United Kingdom
c Nuffield Department of Orthopaedics, Rheumatology, and Musculoskeletal Sciences, University of Oxford, United Kingdom
d Direcció de Sistemes d’Informació, Institut Català de la Salut, Barcelona, Spain
e NIHR Wellcome Trust Clinical Research Facility, University of Southampton, United Kingdom
f MRC Lifecourse Epidemiology Unit, United Kingdom
g Faculty of Medicine, University of Southampton, United Kingdom
h GREMPAL Research Group, Idiap Jordi Gol and CIBERFes, Universitat Autonoma de Barcelona and Instituto de Salud Carlos III, Barcelona, Spain
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