1. NIMTS Hospital, 12 Monis Petraki Street, 11521 Athens, Greece
2. Novartis Hellas, 12th Km National Road 1, Metamorfosis, 14451 Athens, Greece
3. General Hospital of Thessaloniki “Papageorgiou”, West Ring Road, 56429 Thessaloniki, Greece
4. Polyclinic General Hospital, 3 Peireos Street, 10552 Athens, Greece
5. Laiko General Hospital, 17 Agiou Thoma Street, 115 27 Athens, Greece