1. University of Patras Medical School; Department of Vascular Surgery; Hippocrates Ave, Rio Patras Achaia Greece 26504
2. Evanston Northwestern Healthcare; Department of Surgery; Northwestern University Evanston Illinois USA 60201
3. Ealing Hospital and Imperial College, London; Vascular Unit and Department of Vascular Surgery; Uxbridge Road Southall Middlesex UK UB1 3HW
4. Vascular Screening and Diagnostic Centre, Cyprus University; 2 Kyriacou Matsi Street Ayios Dhometios Nicosia Cyprus 2368
5. Freeman Hospital; Northern Vascular Centre; Newcastle upon Tyne UK NE7 7DN
6. Department of Surgery; Division of Vascular Surgery; Henry Ford Hospital 2799 W. Grand Boulevard Detroit Michigan USA 28202
7. University Hospital of Patras; Vascular Surgery; Patras Greece 26504