1. Department of Medicine, University of Patras, 26504 Patras, Greece
2. Department of Infectious Diseases, University General Hospital of Patras, 26504 Patras, Greece
3. Division of Internal Medicine, University General Hospital of Patras, 26504 Patras, Greece
4. Department of Pulmonology, University General Hospital of Patras, 26504 Patras, Greece
5. Department of Obstetrics and Gynecology, University General Hospital of Patras, 26504 Patras, Greece