1. Department of Vascular Surgery, Erasmus University Medical Centre, Rotterdam, the Netherlands
2. Department of Angiology and Vascular Surgery, Centro Hospitalar São João, Porto, Portugal; Department of Surgery and Physiology, Faculty of Medicine of Oporto, Porto, Portugal
3. Department of Angiology and Vascular Surgery, Hospital de Santa Marta, Centro Hospitalar de Lisboa Central, Lisbon, Portugal
4. Department of Angiology and Vascular Surgery, Hospital do Divino Espírito Santo, Ponta Delgada, Azores, Portugal
5. Department of Anesthesiology, Erasmus University Medical Center, Rotterdam, Zuid-Holland, the Netherlands