Accepted for Publication: August 23, 2011.
Published Online: November 21, 2011. doi:10.1001/archdermatol.2011.338
Author Contributions: All authors 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: Magro and Zippin. Acquisition of data: Magro, Crowson, and Desman. Analysis and interpretation of data: Magro, Crowson, Desman, and Zippin. Drafting of the manuscript: Magro and Zippin. Critical revision of the manuscript for important intellectual content: Crowson, Magro, and Zippin. Obtained funding: Zippin. Administrative, technical, and material support: Magro. Study supervision: Magro and Zippin.
Financial Disclosure: None reported.
Funding/Support: This study was supported in part by the Dermatology Foundation, La Roche-Posay North American Foundation, Woman's Dermatological Society, and American Skin Association (all awarded to Dr Zippin). All the technical staffing and slide preparations were paid for by dematopathology research funds from the Department of Dermatology (Dr Magro).
Additional Contributions: Lonny R. Levin, PhD, and Jochen Buck, MD, PhD, provided the R21 antibody and critically read the manuscript, Adam Widman, BA, and Matt Sagrawsky, BS, scored the sAC immunostaining, and Mary Chang performed the statistical analysis.