1 Department of Surgery, School of Medicine, European University of Cyprus, Nicosia, Cyprus.
2 Department of Surgery, Amsterdam University Medical Centre, University of Amsterdam, The Netherlands.
3 Department of Vascular and Endovascular Surgery, The Royal Oldham Hospital, Pennine Acute Hospitals NHS Trust, Manchester, UK; Division of Cardiovascular Sciences, School of Medical Sciences, University of Manchester, Manchester, UK. Electronic address: antoniou.ga@hotmail.com.
4 Department of Primary Education, School of Education, University of Ioannina, Ioannina, Greece.