Accepted for Publication: August 22, 2013.
Published Online: April 9, 2014. doi:10.1001/jamadermatol.2013.7747.
Study concept and design: Ai, Keegan, Press, Kim.
Acquisition, analysis, or interpretation of data: All authors.
Drafting of the manuscript: Ai, Keegan, Press, Pincus.
Critical revision of the manuscript for important intellectual content: All authors.
Statistical analysis: Keegan, Yang, Pincus.
Administrative, technical, or material support: Ai, Press.
Study supervision: Ai, Press, Kim, Chang.
Conflict of Interest Disclosures: None reported.
Funding/Support: The collection of cancer incidence data used in this study was supported by the California Department of Public Health as part of the statewide cancer reporting program mandated by California Health and Safety Code Section 103885; the National Cancer Institute’s Surveillance, Epidemiology, and End Results program under contract HHSN2612010000140C awarded to the Cancer Prevention Institute of California, contract HHSN261201000035C awarded to the University of Southern California, and contract HHSN261201000034C awarded to the Public Health Institute; and the Centers for Disease Control and Prevention’s National Program of Cancer Registries, under agreement 1U58 DP000807-01 awarded to the Public Health Institute.
Role of the Sponsor: The funding sources 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.