1. Copenhagen Centre for Team Sport and Health; Department of Nutrition, Exercise and Sports; University of Copenhagen; Denmark
2. Sport and Health Sciences; College of Life and Environmental Sciences; St. Luke's Campus; University of Exeter; Exeter UK
3. Department of Cardiology; Gentofte University Hospital; Denmark
4. Frederikssund Municipality; Frederikssund Denmark
5. Anti Doping Danmark; Brøndby Denmark
6. FIFA Medical Assessment and Research Centre (F-MARC) and Schulthess Klinik; Zurich Switzerland