1. Department of Anesthesiology and Intensive Care, University Hospital, S-751 85 Uppsala, Sweden
2. Department of Nutrition, University Hospital, S-751 85 Uppsala, Sweden
3. Department of Orthopedics, Uppsala University, University Hospital, S-751 85 Uppsala, Sweden
4. Department of Meat Sciences, Swedish University of Agricultural Sciences, Ultuna S-750 07, Uppsala, Sweden
5. Department of Clinical Radiology, Swedish University of Agricultural Sciences, Ultuna S-750 07, Uppsala, Sweden