1. Department of Trauma Surgery, Orthopaedics and Plastic Surgery, University of Göttingen, Göttingen, Germany
2. Kogod Center on Aging and Division of Endocrinology, Mayo Clinic, Rochester, MN, USA
3. Praxis Für Zahnheilkunde, Alexander Thiemann Und Nikolai Wüstefeld (Ang. ZA), Bad Driburg, North Rhine-Westphalia, Germany
4. DUO – Duderstadt Trauma Surgery and Orthopaedics, Duderstadt, Lower Saxony, Germany