1. Clinic for Oral and Maxillofacial Surgery, Kantonsspital Luzern, Lucerne, Switzerland
2. Clinic for Oral, Maxillofacial, and Facial Plastic Surgery, University of Frankfurt, Frankfurt
3. Musculoskeletal Research Unit (MSRU), Equine Hospital, Vetsuisse Faculty, University of Zürich, Zürich, Switzerland
4. Center of Advanced European Studies and Research (caesar), Bonn
5. Institute of Laser Medicine, University of Düsseldorf, Düsseldorf, Germany
6. Division of Cranio-Maxillo-Facial Surgery, Clinic for Reconstructive Surgery, University Hospital, Basel, Switzerland.