1. Faculty of Medicine, Department of Health Sciences, University of Patras, Rio, Patras 26504, Greece
2. Department of Internal Medicine, Patras University Hospital, Rio, Patras 26504, Greece
3. Department of Cardiology, Patras University Hospital, Rio, Patras 26504, Greece
4. Department of Infectious Diseases, Patras University Hospital, Rio, Patras 26504, Greece