1. Department of Physical Therapy, Sahlgrenska University Hospital S-413 45 Gothenburg Sweden
2. Department of Surgery, Institute of Clinical Sciences, Sahlgrenska Academy, Gothenburg University, Gothenburg, Sweden
3. Department of Surgery, Sahlgrenska University Hospital, Gothenburg, Sweden
4. Department of Physiotherapy, Sahlgrenska University Hospital, Gothenburg, Sweden
5. Department of Anaesthesiology and Intensive Care, Institute of Clinical Sciences, Sahlgrenska Academy, Gothenburg University, Gothenburg, Sweden
6. Department of Anaesthesiology and Intensive Care, Sahlgrenska University Hospital, Gothenburg, Sweden
7. Department of Clinical Nutrition, Sahlgrenska University Hospital, Gothenburg, Sweden