1. School of Medicine, Department of Surgery, University of Crete , Crete , Greece
2. Cardiac Surgery Department , University Hospital of Heraklion, Crete , Greece
3. School of Medicine, Department of Social Medicine , University of Crete, Crete , Greece
4. School of Medicine, Department of Psychiatry , University of Crete, Crete , Greece
5. Department of Psychiatry, University Hospital of Heraklion , Crete , Greece
6. School of Medicine, Department of Toxicology, University of Crete , Crete , Greece
7. School of Medicine, Laboratory of Health Planning, University of Crete , Crete , Greece
8. Dental Clinic, University Hospital of Heraklion , Crete , Greece