In the article by Wilson et al published in the February 2009 issue of Arthritis Care & Research (pp. 233–239), the grant support information was inadvertently omitted from the publication. The following statement should have been included: “Supported by a grant from the Rochester Epidemiology Project (grant AR-30582-43 from the National Institute of Arthritis and Musculoskeletal and Skin Diseases).

We regret the error.