1. Department of Neurology Hospices Civils de Lyon, University of Lyon Lyon France
2. NeuroPain Lab, INSERM U1028, UMR5292, Lyon Neuroscience Research Center, CNRS University Claude Bernard Lyon 1 Lyon France
3. Pain Unit Groupe Hospitalier Mutualiste de Grenoble Grenoble France
4. Department of Neurology University Hospital Saint‐Etienne France