Accepted for Publication: August 21, 2011.
Published Online: November 21, 2011. doi:10.1001/archdermatol.2011.342
Author Contributions: Drs Piette and Werth had full access to all the data in the study and take responsibility for the integrity of the data and the accuracy of the data analysis. Study concept and design: Piette, Okawa, Ten Have, and Werth. Acquisition of data: Piette, Foering, Chang, and Werth. Analysis and interpretation of data: Piette, Feng, and Werth. Drafting of the manuscript: Piette and Werth. Critical revision of the manuscript for important intellectual content: Foering, Chang, Okawa, Ten Have, and Feng. Statistical analysis: Foering, Ten Have, and Feng. Obtained funding: Werth. Administrative, technical, and material support: Piette, Foering, Chang, Okawa, and Werth. Study supervision: Werth.
Financial Disclosure: The copyright for CLASI is owned by the University of Pennsylvania. Dr Werth has served as a consultant to Pfizer, Novartis, Cephalon, Rigel, and Medimmune and has received grant support from Celgene and Amgen.
Funding/Support: This study is based on work supported by the National Institutes of Health, including grant K24-AR 18 02207 (Dr Werth).
Previous Presentation: This study was presented in part at the 71st Annual Meeting of the Society for Investigative Dermatology; May 7, 2011; Phoenix, Arizona.
Additional Contributions: Lynne Taylor, PhD (Center for Clinical Epidemiology and Biostatistics, University of Pennsylvania), helped with statistical analysis.
This article was corrected for errors on September 11, 2012.