1. Department of Cardiology; Gentofte University Hospital; Copenhagen Denmark
2. Department of Cardiology; Bispebjerg University Hospital; Copenhagen Denmark
3. University of Birmingham Centre for Cardiovascular Sciences; City Hospital; Birmingham UK
4. Division of Cardiology; Heart Research Follow-up Program; University of Rochester Medical; Rochester NY USA
5. Institute of Health Science and Technology; Aalborg University; Aalborg Denmark
6. National Institute of Public Health; University of Southern Denmark; Copenhagen Denmark