1. Clinical Research Centre Optimized Senior Patient Program Copenhagen University Hospital Hvidovre Denmark
2. Department of Gastroenterology Surgical Unit Copenhagen University Hospital Hvidovre Denmark
3. Department of Orthopaedic Surgery Copenhagen University Hospital Hvidovre Denmark
4. Division of Social Medicine and Global Health Department of Clinical Sciences Malmo Lund University Skåne University Hospital Malmà Sweden
5. Clinical Research Centre Copenhagen University Hospital Hvidovre Denmark