1. Department of Pediatric Surgery and Pediatric Orthopedics, Clinic St. Hedwig, Barmherzige Brueder Regensburg, KUNO Pediatric University Medical Center, 93049 Regensburg, Germany
2. Department of Trauma Surgery, Orthopedics and Sports Medicine, Barmherzige Brueder Regensburg, 93049 Regensburg, Germany
3. Department of Trauma Surgery, University Medical Center Regensburg, 93053 Regensburg, Germany