1. Parker Institute, Bispebjerg and Frederiksberg Hospital; Copenhagen Denmark
2. Department of Radiology; Bispebjerg and Frederiksberg Hospital; Copenhagen Denmark
3. Research Unit of Medical Imaging, Physics and Technology; University of Oulu; Oulu Finland
4. Medical Research Center; University of Oulu and Oulu University Hospital; Oulu Finland
5. Department of Diagnostic Radiology; Oulu University Hospital; Oulu Finland
6. Department of orthopedics, Clinical Sciences Lund; Lund University, Skåne University Hospital; Lund Sweden