1. Department of Radiology; Randers Regional Hospital; Randers Denmark
2. Department of Radiology; Clinical Hospital Centre Rijeka; Rijeka Croatia
3. Medical Department V; Aarhus University Hospital; Aarhus Denmark
4. Department of Surgery L; Aarhus University Hospital; Aarhus Denmark
5. Department of Biostatistics; University of Copenhagen, Faculty of Health Sciences, Institute of Public Health; Copenhagen K Denmark