Sparks JA, Wallace ZS, Seet AM, Gianfrancesco MA, et al. Associations of baseline use of biologic or targeted synthetic DMARDs with
COVID-19 severity in rheumatoid arthritis: Results from the COVID-19 Global
Rheumatology Alliance physician registry. Ann Rheum Dis 2021 May 28. pii: annrheumdis-2021-220418.
PMID: 34049860