Accepted for Publication: March 6, 2012.
Published Online: May 21, 2012. doi:10.1001/archdermatol.2012.943
Author Contributions: Dr Qureshi had full access to all the data in the study and takes responsibility for the integrity of the data and the accuracy of the data analysis. Study concept and design: Frankel, Han, and Qureshi. Acquisition of data: Frankel, Han, and Qureshi. Analysis and interpretation of data: Frankel, Han, Li, and Qureshi. Drafting of the manuscript: Frankel and Qureshi. Critical revision of the manuscript for important intellectual content: Frankel, Han, Li, and Qureshi. Statistical analysis: Han and Li. Obtained funding: Qureshi. Administrative, technical, or material support: Qureshi. Study supervision: Han and Qureshi.
Financial Disclosure: Dr Qureshi serves as a consultant to Novartis and the Centers for Disease Control and Prevention.
Funding/Support: This work is supported by grant CA50385 from the National Institutes of Health and by the Department of Dermatology, Brigham and Women's Hospital.
Role of the Sponsors: The sponsor had no role in the design and conduct of the study; in the collection, analysis, and interpretation of the data; or in the preparation, review, or approval of the manuscript.
Previous Presentation: This study was presented in part at the 71st Annual Meeting of the Society for Investigative Dermatology Meeting; May 6, 2011; Phoenix, Arizona.
Additional Contributions: We thank the NHS II participants for their dedication and time commitment and the NHS II staff for their continued assistance.