1. 2nd Department of Internal Medicine General and Oncology Hospital of Kifissia ‘Agioi Anargyroi’ Athens Greece
2. 1st Department of Propedeutic Internal Medicine, Laikon General Hospital, School of Medicine National and Kapodistrian University of Athens Athens Greece
3. 1st Department of Propedeutic Internal Medicine‐Rheumatology Unit, Laikon General Hospital, School of Medicine National and Kapodistrian University of Athens Athens Greece
4. 2nd Department of Propedeutic Internal Medicine, Attikon University Hospital, School of Medicine National and Kapodistrian University of Athens Athens Greece
5. Department of Health Economics, School of Health Sciences National and Kapodistrian University of Athens Athens Greece