1Department of Endocrinology, 424 General Military Hospital, Thessaloniki, Greece
2Center for Bone Quality, Department of Internal Medicine, Section of Endocrinology, Leiden University Medical Center, Leiden, The Netherlands
3First Department of Pharmacology, Faculty of Medicine, Aristotle University of Thessaloniki, Thessaloniki, Greece
4Department of Endocrinology and Diabetes and Department of Medical Research, 251 Hellenic Air Force & VA General Hospital, Athens, Greece