1. Cardiothoracic and Vascular Surgery Working Group, Society of Junior Doctors, Athens, Greece
2. Department of Surgery, Jura Bernois Hospital, Saint Imier, Switzerland
3. Department of Vascular Surgery, AHEPA University General Hospital, Aristotle University of Thessaloniki, Thessaloniki, Greece
4. Division of Cardiothoracic Surgery, Department of Surgery, School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
5. Department of Vascular Surgery, University Hospital of Larissa, Faculty of Medicine, School of Health Sciences, University of Thessaly, Larissa, Greece