Accepted for Publication: November 22, 2013.
Published Online: April 2, 2014. doi:10.1001/jamadermatol.2013.9944.
Study concept and design: Kirchhof, Dutz.
Acquisition of data: All authors.
Analysis and interpretation of data: Kirchhof, Dutz.
Drafting of the manuscript: Kirchhof.
Critical revision of the manuscript for important intellectual content: All authors.
Administrative, technical, and material support: Kirchhof, Dutz.
Study supervision: Dutz.
Conflict of Interest Disclosures: None reported.
Additional Information: Dr Dutz is a Senior Scientist of the Child and Family Research Institute, University of British Columbia.