1. Section of Vascular Surgery, Department of Surgery, Department of Clinical Science and Education, Karolinska Institutet at Södersjukhuset, Stockholm, Sweden;
2. Department of Molecular Medicine and Surgery, Karolinska Institutet, Luleå, Stockholm;
3. Department of Surgery, Sunderby Hospital, Luleå, Sweden;
4. Institute of Environmental Medicine, Unit of Cardiovascular Epidemiology, Karolinska Institutet, Stockholm, Sweden;
5. Department of Vascular Surgery, Karolinska University Hospital, Stockholm, Sweden