1. Department of Treatment of Chronic Pain Patients, Pellegrin University Teaching Hospital, Bordeaux
2. Private Neurologist, Toulouse
3. Department of Neurology, Rangueil Hospital, Toulouse
4. Emergency Headache Centre, Lariboisière Hospital, Paris
5. General Practitioner, Rivery
6. Neurological Clinic, Salengro Hospital, Lille
7. Schwarz Pharma France, Boulogne-Billancourt
8. Department of Evaluation and Treatment of Pain, Pasteur University Teaching Hospital, Nice, France