Accepted for Publication: June 17, 2013.
Published Online: January 15, 2014. doi:10.1001/jamadermatol.2013.6249.
Study concept and design: Velez, Davids, Brown, Schmults.
Acquisition of data: Velez, Karia, Vartanov, Brown.
Analysis and interpretation of data: Velez, Karia, Schmults.
Drafting of the manuscript: Velez, Karia, Schmults.
Critical revision of the manuscript for important intellectual content: All authors.
Statistical analysis: Velez, Karia, Schmults.
Administrative, technical, or material support: Karia.
Study supervision: Schmults.
Conflict of Interest Disclosures: None reported.
Additional Contributions: Ye Guo, MSCS, provided assistance with our database. Victor Neel, MD, PhD, served as our Massachusetts General Hospital collaborator and provided access to data.