Accepted for Publication: July 24, 2013.
Published Online: November 18, 2013. doi:10.1001/jamainternmed.2013.11349.
Study concept and design: Andersson, Overgaard, Jensen.
Acquisition of data: Andersson, Torp-Pedersen, Jensen.
Analysis and interpretation of data: Andersson, Mérie, Jørgensen, Gislason, Overgaard, Køber, Jensen, Hlatky.
Drafting of the manuscript: Andersson, Jensen.
Critical revision of the manuscript for important intellectual content: All authors.
Statistical analysis: Andersson, Mérie.
Obtained funding: Andersson, Køber.
Administrative, technical, or material support: Jensen, Hlatky.
Study supervision: Jørgensen, Gislason, Overgaard, Køber, Jensen.
Conflict of Interest Disclosures: Dr Køber reported receiving honorarium as a speaker for Servier at symposia in 2012 and 2013. No other disclosures were reported.
Funding/Support: This study was supported by grant FSS-11-120873 from the Danish Agency for Science, Technology, and Innovation (the Danish Medical Research Council).
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; preparation, review, or approval of the manuscript; and decision to submit the manuscript for publication.