1. Department of Paediatrics Stavanger University Hospital Stavanger Norway
2. Faculty of Health Sciences University of Stavanger Stavanger Norway
3. Critical Care and Anaesthesiology Research Group Stavanger University Hospital Stavanger Norway
4. Department of Mathematics and Physics University of Stavanger Stavanger Norway
5. Section of Biostatistics, Department of Research Stavanger University Hospital Stavanger Norway
6. Strategic Research, Laerdal Medical Stavanger Norway