1. Department of Cardiology, Heart Center, Academic Medical Center University of Amsterdam Amsterdam The Netherlands
2. Division of Pharmacoepidemiology and Clinical Pharmacology, Utrecht Institute for Pharmaceutical Sciences Utrecht University Utrecht The Netherlands
3. Department of Cardiology, Herlev and Gentofte Hospital University of Copenhagen Gentofte Denmark
4. Department of Cardiology Aalborg University Hospital Aalborg Denmark
5. Department of Clinical Investigation and Cardiology Nordsjaellands Hospital Hillerød Denmark
6. Copenhagen Emergency Medical Services Denmark
7. Istituto Auxologico Italiano IRCCS, Center for Cardiac Arrhythmias of Genetic Origin and Laboratory of Cardiovascular Genetics Milan Italy
8. National Institute of Public Health University of Southern Denmark Copenhagen Denmark
9. The Danish Heart Foundation Copenhagen Denmark
10. Netherlands Heart Institute Utrecht The Netherlands