1. Department of Trauma, Orthopedic and Reconstructive Surgery and Sportsmedicine, German Armed Forces Hospital Ulm, Ulm, Deutschland
2. Department of General, Visceral and Thoracic Surgery, German Armed Forces Central Hospital Koblenz, Koblenz, Deutschland
3. Department of Trauma, Orthopedic and Reconstructive Surgery, Handsurgery and Burn Medicine, German Armed Forces Central Hospital Koblenz, Koblenz, Deutschland