biostudies-literatureUnknown185(9)Singh JACMAJ : Canadian Medical Association journal = journal de l'Association medicale canadienne793-5https://www.ebi.ac.uk/biostudies/studies/S-EPMC3680558biostudies-literatureUse of biologics in a patient with rheumatoid arthritis refractory to methotrexate.PMC3680558Singh JAfalseUse of biologics in a patient with rheumatoid arthritis refractory to methotrexate.2013-01-01T00:00:00Z2013 Jun2025-04-26T20:28:56.034Z2025-04-06T16:25:45.874ZS-EPMC36805582346063610.1503/cmaj.121607