1. Department of Nursing, School of Health Science, Hellenic Mediterranean University, 71410 Heraklion, Greece
2. Venizelio General Hospital of Heraklion, 71410 Heraklion, Greece
3. Department of Nursing, School of Health Sciences, University of West Attica, 12243 Athens, Greece
4. Clinic of Social and Family Medicine, Department of Social Medicine, Faculty of Medicine, University of Crete, 70013 Heraklion, Greece