About the Authors

Karin Biering

Karin.Biering@vest.rm.dk

Affiliation Department of Occupational Medicine, Regional Hospital West Jutland, Herning, Denmark

Torsten Toftegaard Nielsen

† Deceased.

Affiliation Department of Cardiology, Aarhus University Hospital, Skejby, Aarhus, Denmark

Kurt Rasmussen

Affiliation Department of Occupational Medicine, Regional Hospital West Jutland, Herning, Denmark

Troels Niemann

Affiliation Department of Cardiology, Herning Regional Hospital, Herning, Denmark

Niels Henrik Hjollund

Affiliations Department of Occupational Medicine, Regional Hospital West Jutland, Herning, Denmark, Department of Clinical Epidemiology, Aarhus University Hospital, Aarhus, Denmark

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: KB TTN KR TN NHH. Analyzed the data: KB. Wrote the paper: KB TTN KR TN NHH.