Failed Back Surgery Syndrome

• St. Luke's University Health Network — Bethlehem, Pennsylvania, United States
• Geisinger Medical Center — Danville, Pennsylvania, United States
• Penn State Hershey Neurosciences Institute — Hershey, Pennsylvania, United States
• Thomas Jefferson University — Philadelphia, Pennsylvania, United States

• Poitiers University Hospital — Poitiers, France

• Hospital San Pedro de Logroño — Logroño, La Rioja, Spain
• Complejo Asistencial Universitario de Salamanca — Salamanca, Spain

• Universitair Ziekenhuis Brussel — Jette, Belgium

Not specified

• UZ Brussel — Brussels, Belgium

• Universitair Ziekenhuis Brussel — Jette, Belgium

• China Medical University Hospital — Taichung, Taiwan

• Rijnstate Hospital — Velp, Gelderland, Netherlands
• Medisch Centrum Alkmaar — Alkmaar, North Holland, Netherlands
• Academic Medical Center — Amsterdam, North Holland, Netherlands
• Alrijne Hospital — Leiderdorp, South Holland, Netherlands

• UZ Brussel — Jette, Belgium
• AZ Nikolaas — Sint-Niklaas, Belgium