1. Endocrinology and Diabetes, STEPS Stoffwechselzentrum, Biel/Bienne, Switzerland
2. Endocrinology &Diabetes, European University Cyprus (EUC), Nicosia, Cyprus
3. Department of Endocrinology and Diabetes, HYGEIA Hospital Athens, Greece
4. Private Practice, Endocrinologist and Diabetologist, Chalandri, Athens, Greece
5. Private Practice, Endocrinologist and Diabetologist, Kesariani, Athens, Greece
6. Endocrine Unit, 2nd Department of Internal Medicine Propaedeutic, Research Institute and Diabetes Center, National and Kapodistrian University of Athens, Attikon University Hospital, Greece