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Mature T/NK-cell lymphoproliferative disease and Epstein–Barr virus infection are more frequent in patients with rheumatoid arthritis treated with methotrexate

Rheumatoid DisorderRheumatologyLymphoid NeoplasiaAutoimmune DiseaseImmunodeficienciesImmunologyAutoimmunityInflammatory Rheumatic DiseaseImmunologic DiseaseMedicineEpstein–barr Virus InfectionInflammatory ArthritisRheumatoid Arthritis