Published Online: April 7, 2014. doi:10.1001/jamainternmed.2014.578.
Study concept and design: Nielsen, Holst.
Acquisition, analysis, and interpretation of data: All authors.
Drafting of the manuscript: Nielsen, Strandberg.
Critical revision of the manuscript for important intellectual content: Pietersen, Graff, Holst.
Statistical analysis: Nielsen.
Obtained funding: Nielsen, Graff, Holst.
Administrative, technical, or material support: Pietersen, Graff.
Study supervision: Holst.
Conflict of Interest Disclosures: Dr Holst is an employee of Novo Nordisk A/S, Bagsvaerd, Denmark.
Funding/Support: This study was supported by the University of Copenhagen, the Danish National Research Foundation, The John and Birthe Meyer Foundation, and grant 11-107456 from The Danish Council for Independent Research.
Role of the Sponsors: The funding source had no role in the design and conduct of the study; collection, management, analysis, and interpretation of the data; the preparation, review, or approval of the manuscript; and the decision to submit the manuscript for publication.
Group Information: The Copenhagen ECG Study Group Members are Jonas B. Nielsen, MD, Claus Graff, MSc, PhD, Adrian Pietersen, MD, Anders G. Holst, MD, PhD, Bent Lind, MD, DMSci, Johannes J. Struijk, MSc, PhD, Stig Haunsø, MD, DMSci, Lars Køber, MD, DMSci, and Jesper H. Svendsen, MD, DMSci.