1. PHO Dental Clinical Center Sv. Pantelejmon, Clinic for Orthodontics, Skopje, R. Macedonia
2. Faculty of Dental Medicine, University Ss. Ciril and Metodius, Department of Prosthodontics, Skopje, R. Macedonia
3. Faculty of Dental Medicine, University Ss. Ciril and Metodius, PHO Dental Clinical Centar for Maxillofacial Surgery, Skopje, R. Macedonia
4. Facultu of Dental Medicine, Department for Prosthodontics, University of Dental Medicine, Sofia, R. Bulgaria