1. Department of Clinical Science, Intervention and Technology, Division of Orthopedics and Biotechnology, Karolinska Institutet, Stockholm, Sweden
2. Center for Spine Surgery in Stockholm, Stockholm, Sweden
3. Department of Clinical Science, Intervention and Technology, Division of Anesthesiology and Intensive Care, Karolinska Institutet, Stockholm, Sweden
4. Department of Perioperative Medicine and Intensive Care, Karolinska University Hospital, Stockholm, Sweden
5. Department of Health, Medicine and Caring Sciences, Linköping University, Linköping, Sweden
6. Department of Education, Communication and Learning, University of Gothenburg, Gothenburg, Sweden
7. School of Health Sciences, Örebro University, Örebro, Sweden
8. Division of Neuronic Engineering, Royal Institute of Technology (KTH), Stockholm, Sweden
9. Reconstructive Orthopaedics, Karolinska University Hospital, Stockholm, Sweden