1. Erasmus MC; Departments of Epidemiology & Radiology; Dr Molewaterplein 40 PO Box 2040 Rotterdam Netherlands 3015 GD
2. Rijnstate; Department of Vascular Surgery; Arnhem Netherlands
3. Dutch Health Care Inspectorate; Department of Research and Innovation; Utrecht Netherlands
4. Catharina Hospital; Department of Vascular Surgery; visiting address: Michelangelolaan 2, 5623 EJ, Eindhoven postal address: P.O. Box 1350 Eindhoven Netherlands 5602 ZA
5. Erasmus MC; Department of Vascular Surgery; Rotterdam Netherlands
6. Erasmus MC; Department of Epidemiology; PO Box 2040 Rotterdam Netherlands 3000 CA