Correction to: Sustained improvement in work outcomes in employed patients with rheumatoid arthritis during 2 years of adalimumab therapy: an observational cohort study. - Behrens, Frank; Tony, Hans-Peter; Koehm, Michaela; Schwaneck, Eva C.; Gnann, Holger; Greger, Gerd; Burkhardt, Harald; Schmalzing, Marc (Clinical Rheumatology, 2020)