1. Metabolic Bone Diseases, School of Medicine, National and Kapodistrian University of Athens, 14561 Athens, Greece
2. Department of Orthodontics, School of Dentistry, National and Kapodistrian University of Athens, 11527 Athens, Greece
3. Laboratory for the Research of Musculoskeletal System “Th. Garofalidis”, School of Medicine, National and Kapodistrian University of Athens, 14561 Athens, Greece