1 University Pain Centre Maastricht (UPCM), Department of Anesthesiology and Pain Management, Maastricht University Medical Centre, Maastricht, The Netherlands; Department of Anaesthesiology and Pain Management, OLVG, Amsterdam, The Netherlands.
2 University Pain Centre Maastricht (UPCM), Department of Anesthesiology and Pain Management, Maastricht University Medical Centre, Maastricht, The Netherlands.
3 Maastricht University Medical Centre, Department of Clinical Epidemiology and Medical Technology Assessment, Maastricht, The Netherlands.
4 Maastricht University Medical Centre, Department of Otorhinolaryngology, Head & Neck Surgery, GROW School for Oncology and Developmental Biology, Maastricht, The Netherlands.
5 University Pain Centre Maastricht (UPCM), Department of Anesthesiology and Pain Management, Maastricht University Medical Centre, Maastricht, The Netherlands; Department of Translational Neuroscience, School of Mental Health and Neuroscience, Maastricht University, The Netherlands.
6 University Pain Centre Maastricht (UPCM), Department of Anesthesiology and Pain Management, Maastricht University Medical Centre, Maastricht, The Netherlands; Centre of Expertise for Palliative Care, Maastricht University Medical Centre (MUMC+), Maastricht, The Netherlands. Electronic address: m.vanden.beuken@mumc.nl.