1. Alan Edwards Centre for Research on Pain; McGill University; Montreal QC Canada
2. Department of Neurology and Neurosurgery; McGill University; Montreal QC Canada
3. Department of Neuroscience; Medical School, University of Minnesota; Minneapolis MN USA
4. Department of Anesthesiology; McGill University; Montreal QC Canada
5. Department of Pharmacology and Therapeutics, Faculty of Medicine; McGill University; Montreal QC Canada
6. Faculty of Dentistry; McGill University; Montreal QC Canada
7. Department of Pharmacology; Medical School, University of Minnesota; Minneapolis MN USA
8. Department of Dermatology; Medical School, University of Minnesota; Minneapolis MN USA