[1] “Hellenic Red Cross” Hospital of Athens,2nd Cardiology Department
[2] “Evangelismos” General Hospital,Department of Endocrinology, Diabetes and Metabolism
[3] 251 G.N.A. “Hellenic Air Force Hospital”,Department of Endocrinology
[4] Athens University Medical School,1st Department of Propaedeutic and Internal Medicine, “Laikon” General Hospital
[5] Athens University Medical School,1st Department of Cardiology, “Hippokration” General Hospital
[6] Athens University Medical School,1st Clinic of Internal Medicine, “Laikon” General Hospital