Author Contributions: Dr Larsson had full access to all of 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: Larsson, Orsini, Wolk.
Acquisition of data: Larsson, Orsini.
Analysis and interpretation of data: Larsson, Orsini, Wolk.
Drafting of the manuscript: Larsson, Orsini.
Critical revision of the manuscript for important intellectual content: Larsson, Orsini, Wolk.
Statistical analysis: Larsson, Orsini.
Obtained funding: Wolk.
Administrative, technical, or material support: Wolk.
Study supervision: Wolk.
Financial Disclosures: None reported.
Funding/Support: This work was supported by research grants from the Swedish Cancer Foundation and the Swedish Research Council for Infrastructure.
Role of the Sponsor: The funding sources had no role in the design and conduct of the study; collection, management, analysis, and interpretation of the data; or preparation, review, or approval of the manuscript.