De Stefano L, D'Onofrio B, Sakellariou G, Manzo A, et al. Progressive increase in time to referral and persistently severe clinical
presentation over the years in autoantibody-negative patients with rheumatoid
arthritis in the setting of an early arthritis clinic. Ann Rheum Dis 2022 Apr 29. pii: annrheumdis-2022-222264.
PMID: 35487680