1. Section of Surgical Pathophysiology; Rigshospitalet, Copenhagen University Hospital
2. Lundbeck Foundation Centre for Fast-Track Hip and Knee Arthroplasty; Cophenhagen Denmark
3. Physical Medicine & Rehabilitation Research-Copenhagen (PMR-C), Department of Physical Therapy, Clinical Research Centre, and Department of Orthopedic Surgery; Hvidovre Hospital, University of Copenhagen; Copenhagen Denmark
4. Department of Orthopedic Surgery; Gentofte Hospital; Gentofte Denmark
5. Department of Orthopedic Surgery; Vejle Sygehus; Vejle Denmark
6. Section for Transfusion Medicine; Rigshospitalet