Accepted for Publication: February 22, 2013.
Published Online: June 5, 2013. doi:10.1001/jamadermatol.2013.4228.
Study concept and design: J. I. Silverberg.
Acquisition of data: J. I. Silverberg.
Analysis and interpretation of data: Both authors.
Drafting of the manuscript: J. I. Silverberg.
Critical revision of the manuscript for important intellectual content: Both authors.
Statistical analysis: J. I. Silverberg.
Administrative, technical, and material support: N. B. Silverberg.
Study supervision: N. B. Silverberg.
Conflict of Interest Disclosures: None reported.
Trial Registration: clinicaltrials.gov Identifier: NCT01401374.