Ioannis Ilias obtained his MD and PhD at the University of Athens, Greece, and trained in Endocrinology in Greece and the USA as a fellow at the National Institutes of Health, Bethesda, Maryland. At the National Institutes of Health, he extensively studied patients with Cushing's syndrome and pheochromocytoma and also trained in Clinical Pharmacology. Upon his return to Greece, he served as an Assistant Professor of Clinical Pharmacology at the University of Patras Medical School. He is currently the director of the Department of Endocrinology at Ippokration Hospital, Athens, Greece, and is also active in teaching at both under- and postgraduate levels.