1. Department of Orthopaedic Surgery, Zuyderland Medical Center, Heerlen, the Netherlands
2. Department of Neurosurgery, Maastricht University Medical Center, Maastricht, the Netherlands
3. Department of Neurosurgery, Zuyderland Medical Center, Heerlen, the Netherlands
4. Care and Public Health Research Institute (CAPHRI) Maastricht University, Maastricht, the Netherlands
5. Department of Clinical Pharmacy, Pharmacology and Toxicology, Zuyderland Medical Center, Heerlen, the Netherlands
6. Department of Anaesthesiology, Zuyderland Medical Center, Heerlen, the Netherlands
7. Department of Clinical Epidemiology and Medical Technology Assessment, Maastricht University Medical Center, Maastricht, the Netherlands
8. School for Mental Health & Neuroscience, Maastricht University, Maastricht, The Netherlands