1. Endocrinology, Diabetes and Metabolism Clinics, Private Practice, 26221 Patras, Greece
2. Center for Diabetes and Endocrine Research, College of Medicine and Life Sciences, University of Toledo, Toledo, OH 43614, USA
3. Hellenic Endocrine Network, 10682 Athens, Greece
4. Department of Medicine, Edward Hines, Jr. VA Hospital, Loyola University Chicago, Hines, IL 60141, USA
5. Endocrine Surgery Center of Excellence, Euroclinic Hospital, 11528 Athens, Greece
6. School of Medicine, University of Athens, 11527 Athens, Greece
7. Division of Endocrinology, Diabetes and Metabolism, Athens Medical Center, 11528 Athens, Greece
8. Endocrinology, Diabetes and Metabolism Clinics, Private Practice, 11528 Athens, Greece
9. Endocrinology, Diabetes and Metabolism Clinics, Private Practice, 65302 Kavala, Greece
10. Medical School, University of Thessaly, 41223 Larisa, Greece