Accepted for Publication: April 27, 2012.
Author Contributions: Drs Kofoed, Clemmensen, and Gniadecki had full access to all the data in the study and takes responsibility for the integrity of the data and the accuracy of the data analysis. Study concept and design: Kofoed and Gniadecki. Acquisition of data: Kofoed, Clemmensen, Mikkelsen, Simonsen, and Andersen. Analysis and interpretation of data: Kofoed and Gniadecki. Drafting of the manuscript: Kofoed and Gniadecki. Critical revision of the manuscript for important intellectual content: Kofoed, Clemmensen, Mikkelsen, Simonsen, Andersen, and Gniadecki. Statistical analysis: Kofoed. Obtained funding: Kofoed. Administrative, technical, and material support: Kofoed, Mikkelsen, Simonsen, and Andersen. Study supervision: Kofoed, Clemmensen, and Gniadecki.
Financial Disclosure: Drs Kofoed has received fees as a speaker from Abbott, Janssen-Cilag, and Pfizer and has served as an advisory board member for Abbott. Dr Gniadecki has obtained research grants from Abbott and lecture fees from Abbott, Janssen-Cilag, Merck Sharp & Dohme, and Pfizer.
Funding/Support: This study was supported by unrestricted research grants from Abbott and Serono Nordic and by the Danish Psoriasis Research Foundation.
Previous Presentations: This study was presented in part, at the Third International Congress on Psoriasis; July 2, 2010; Paris, France; and at 41st Annual Meeting of the European Society for Dermatology Research; September 7-10, 2011; Barcelona, Spain.