1. Consultant, Oral and Maxillofacial Surgery, Teaching Hospital Klinikum-Lippe, Detmold, Germany and Medical Faculty University of RWTH Aachen; Aachen Germany
2. Private Dental Office; Nettetal Germany
3. Professor, Institute for Molecular and Cellular Anatomy University of RWTH Aachen; Aachen Germany
4. Associate Professor, Oral and Maxillofacial Surgery, University Hospital RWTH Aachen; Aachen Germany
5. Consultant, Plastic Surgery University Hospital Leuven; Leuven Belgium