Comorbidity and lifestyle, reproductive factors, and environmental exposures associated with rheumatoid arthritis (Reckner Olsson Å, Skogh T, Wingren G. Ann Rheum Dis 2001;60:934–9.) The authors regret that an error is present in the fourth paragraph of the “Results” section. The first sentence should read: “A non-significant increased risk of RA was seen in both men and women who consumed at least 75 ml of alcohol per drinking session at the age of 25 compared with total abstainers” and not “750 ml” as stated. (Note: Corrections printed in the journal also appear on the Annals web page (www.annrheumdis.com) and are linked to the original publication.)