1. Department of Anesthesiology and University Hospital of Ioannina, Greece
2. Department of Mobile Mental Health Unit of the Prefectures of Ioannina and Thesprotia, Society for the Promotion of Mental Health in Epirus, Greece
3. Department of Cardiac Surgery, University Hospital of Ioannina, Greece
4. Department of Intensive Care Unit, “G. Hatzikosta” General Hospital, Ioannina, Greece