1. German Armed Forces Medical Corps.
2. Department of Orthopedics, Trauma Surgery, Reconstructive Surgery, Hand Surgery, Plastic Surgery, and Burn Medicine, German Armed Forces Central Hospital of Koblenz, Ruebenacherstraße 170, 56072 Koblenz, Germany.
3. Department of Orthopedics and Trauma Surgery, German Armed Forces Hospital of Hamburg, Lesserstraße 180, 22049 Hamburg, Germany.