The original version of this article contained error. In the last part of the formula under section “Norm group data for timing sleep-wake behaviour in general population (study aim 1)” was described “(=33:52 h:mm)”, it should have been “ (= 3:52 h : mm)”. The original article has been corrected.

dx.doi.org/10.1007/s10067-021-05606-w, hdl.handle.net/1765/134218
Clinical Rheumatology
Erasmus University Rotterdam

Habers, G.E.A. (G. Esther A.), van der Helm-van Mil, A.H.M, Veldhuijzen, D.S, Allaart, C.F, Vreugdenhil, E. (Erno), Starreveld, D.E.J. (Daniëlle E. J.), … Evers, A.W. (2021). Correction to: Earlier chronotype in patients with rheumatoid arthritis (Clinical Rheumatology, (2021), 10.1007/s10067-020-05546-x). Clinical Rheumatology. doi:10.1007/s10067-021-05606-w