Calvo Alén, Jaime Efficacy and Safety of Combined Therapy With Synthetic Disease-modifying Antirheumatic Drugs in Rheumatoid Arthritis: Systematic Literature Review. [electronic resource] - Reumatologia clinica - 324-332 p. digital Publication Type: Journal Article; Systematic Review ISSN: 2173-5743 Standard No.: 10.1016/j.reuma.2018.07.016 doi Subjects--Topical Terms: Antirheumatic Agents--administration & dosageArthritis, Rheumatoid--drug therapyDrug Therapy, CombinationHumansLeflunomide--administration & dosageMethotrexate--administration & dosageTreatment Outcome