Refractory Pain

• Institut de Cancerologie de L'Ouest — Angers, France
• Centre Hospitalier Departemental La Roche Sur Yon — La Roche-sur-Yon, France
• Centre Leon Berard — Lyon, France
• Institut de Cancerologie de Montpellier — Montpellier, France

• Alexandria University Faculty of Medicine — Alexandria, Egypt
• Cairo University Kasr Alainy Faculty of Medicine — Cairo, Egypt

• Hôpitaux Universitaires de Hôpitaux Universitaires de Strasbourg — Strasbourg, France

• Dr. Negrín University Hospital — Las Palmas, Spain

• Barrow Brain & Spine — Phoenix, Arizona, United States
• Banner University Medical Center — Tucson, Arizona, United States
• Spanish Hills Interventional Pain Specialists — Camarillo, California, United States
• Coastal Pain & Spinal Diagnostics Medical Group — Carlsbad, California, United States

Not specified