1. Linköping University, University Hospital, Department of Biomedical Engineering, Linköping 581 85, Sweden
2. Linköping University, University Hospital, Department of Biomedical Engineering, Linköping 581 85, SwedenbPerimed AB, Datavägen 9A, Järfälla 175 43, Sweden
3. Linköping University, University Hospital, Department of Medical and Health Sciences, Linköping 581 85, Sweden