1Department of Endocrinology, 424 General Military Hospital, Thessaloniki, Greece
2Department of Medicine, Aristotle University of Thessaloniki, Ippokration Hospital, Thessaloniki, Greece
3Department of Endocrinology and Diabetes, 251 Hellenic Air Force & VA General Hospital, Athens, Greece
4Center for Bone Diseases, Lausanne University Hospital, Lausanne, Switzerland
5Endo Center, Limassol, Cyprus