1 Institute of Medicine, Department of Molecular and Clinical Medicine, Sahlgrenska Academy, University of Gothenburg, Sweden; Department of Vascular Surgery, Sahlgrenska University Hospital, Gothenburg, Sweden. Electronic address: joakim@nordanstig.net.
2 Institute of Medicine, Department of Molecular and Clinical Medicine, Sahlgrenska Academy, University of Gothenburg, Sweden; Department of Vascular Surgery, Sahlgrenska University Hospital, Gothenburg, Sweden.