1. Department of Restorative DentistryBirmingham Dental School and Hospital Birmingham UK
2. Department of Orthodontics, Dentofacial Orthopedics and PedodonticsCharité – Universitätsmedizin Berlin Germany
3. Department of OrthodonticsUniversity Hospital Würzburg Würzburg Germany
4. Department of OrthodonticsUniversity Medical Center Göttingen Göttingen Germany
5. Department of PeriodontologyUniversity Hospital Würzburg Würzburg Germany