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How to treat patients with rheumatoid arthritis when methotrexate has failed? The use of a multiple propensity score to adjust for confounding by indication in observational studies.

Bergstra SA, Winchow LL, Murphy E, Chopra A, Salomon-Escoto K, Fonseca JE, Allaart CF, Landew? RBM. How to treat patients with rheumatoid arthritis when methotrexate has failed? The use of a multiple propensity score to adjust for confounding by indication in observational studies. Ann Rheum Dis. 2019 01; 78(1):25-30.

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