1. Research Centre for Emergency Medicine, Aarhus University Hospital, Aarhus N, Denmark
2. Department of Clinical Medicine, Aarhus University, Aarhus N, Denmark
3. Department of Paediatrics and Adolescent Medicine, Herlev Gentofte Hospital, Herlev, Denmark
4. Lovisenberg Diaconal University College, Oslo, Norway
5. Section for Nursing, Department of Public Health, Aarhus University, Aarhus N, Denmark
6. Department of Child and Adolescent Health, Aarhus University Hospital, Aarhus N, Denmark