Study concept and design: All authors.
Acquisition, analysis, or interpretation of data: All authors.
Drafting of the manuscript: Scheller.
Critical revision of the manuscript for important intellectual content: All authors.
Statistical analysis: Scheller, Svanström.
Study supervision: Pasternak, Svanström, Hviid.
Conflict of Interest Disclosures: The authors have completed and submitted the ICMJE Form for Disclosure of Potential Conflicts of Interest and none were reported.