Functional improvement after patients with rheumatoid arthritis start a new disease modifying antirheumatic drug (DMARD) associated with frequent changes in DMARD: the CORRONA database.
Ranganath VK, Paulus HE, Onofrei A, Khanna D, Reed G, Elashoff DA, Kremer JM, Furst DE. Functional improvement after patients with rheumatoid arthritis start a new disease modifying antirheumatic drug (DMARD) associated with frequent changes in DMARD: the CORRONA database. J Rheumatol. 2008 Oct; 35(10):1966-71.