Author Contributions: Dr Nauman 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: Nauman, Vatten, Wisløff.
Acquisition of data: Nauman, Vatten.
Analysis and interpretation of data: Nauman, Janszky, Vatten, Wisløff.
Drafting of the manuscript: Nauman, Janszky, Vatten, Wisløff.
Critical revision of the manuscript for important intellectual content: Nauman, Janszky, Vatten, Wisløff.
Statistical analysis: Nauman, Janszky.
Obtained funding: Wisløff.
Study supervision: Vatten, Wisløff.
Conflict of Interest Disclosures: All authors have completed and submitted the ICMJE Form for Disclosure of Potential Conflicts of Interest and none were reported.
Funding/Support: The present study was supported by grants from K. G. Jebsen Foundation, the Norwegian Council of Cardiovascular Disease, the Norwegian Research Council (Funding for Outstanding Young Investigators awarded to Dr Wisløff), Funds for Cardiovascular and Medical Research at St Olav's University Hospital, Trondheim, the Torstein Erbo's Foundation, Trondheim, the Liaison Committee between the Central Norway Regional Health Authority and the Norwegian University of Science and Technology (Dr Janszky), and by the Swedish Council of Working Life and Social Research (Dr Janszky).
Role of the Sponsor: The funding organizations 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.
Additional Contributions: The Nord-Trøndelag Health Study (HUNT) is collaboration between the HUNT Research Centre (Faculty of Medicine, Norwegian University of Science and Technology), the Nord-Trøndelag County Council, and the Norwegian Institute of Public Health. We are indebted to the participants of the HUNT study.