Accepted for Publication: August 29, 2013.
Published Online: January 8, 2014. doi:10.1001/jamadermatol.2013.7954.
Study concept and design: Margolis, Apter, Mitra.
Acquisition of data: Margolis, Hoffstad, Papadopoulos.
Analysis and interpretation of data: Margolis, Kim, Apter, Gupta, Mitra.
Drafting of the manuscript: Margolis, Apter, Gupta, Mitra.
Critical revision of the manuscript for important intellectual content: All authors.
Statistical analysis: Margolis, Gupta, Hoffstad, Mitra.
Obtained funding: Margolis.
Administrative, technical, or material support: Kim, Papadopoulos.
Study supervision: Margolis, Mitra.
Conflict of Interest Disclosures: None reported.
Funding/Support: This study was funded by grant R01-AR0056755 from the National Institute of Arthritis Musculoskeletal and Skin Diseases. The PEER study is funded by a grant from Valeant Pharmaceuticals.
Role of the Sponsor: The National Institute of Arthritis Musculoskeletal and Skin Diseases and Valeant Pharmaceuticals had no role in the design and conduct of the study; collection, management, analysis, or interpretation of the data; preparation, review, or approval of the manuscript; and decision to submit the manuscript for publication.
Previous Presentation: This study was presented as an oral abstract at the International Investigative Dermatology Meeting; May 8, 2013; Edinburgh, Scotland.