1. Department of Trauma Surgery and Orthopaedics, Medius Hospitals Nürtingen
2. Sports Trauma Department, Occupational Accident Casualty Hospital Tübingen
3. Department and Outpatient Unit for ENT, Head and Neck Surgery, Cologne University Hospital
4. German Seminar, University of Zurich, Switzerland
5. Department of General, Abdominal, and Transplantation Surgery, Mainz University Hospital
6. Plastic and Aesthetic Surgery, Group Practice for Plastic Surgery Alamuti/Scholz, Wiesbaden