1. Private practice, Zurich, Switzerland
2. Research Assistant, Clinic of Fixed and Removable Prosthodontics and Dental Material Science, Zurich, Switzerland
3. Assistant Professor, Department of Orthodontics, Baskent University Faculty of Dentistry, Istanbul, Turkey
4. Private practice, Hannover, Germany
5. Private practice, Bad Essen, Germany
6. Associate Professor and Department Chair, Department of Preventive Dentistry, Periodontology, Cariology, University of Zurich, Zurich, Switzerland