1. Department of Vascular Surgery, St. Olavs Hospital, Trondheim, Norway;
2. Department of Circulation and Medical Imaging, Norwegian University of Science and Technology, Trondheim, Norway;
3. Department of Vascular Surgery, Sahlgrenska University Hospital, Gothenburg, Sweden;
4. Department of Molecular and Clinical Medicine, Sahlgrenska University Hospital and Academy, Gothenburg University, Sweden;
5. Department of Molecular and Clinical Medicine, Norwegian University of Science and Technology, Trondheim, Norway