Intervertebral Disc Degeneration

• OLV Ziekenhuis Department Neurosurgery — Aalst, Belgium
• Vernon Jubile Hospital — Vernon, British Columbia, Canada
• McGill University — Montreal, Canada
• Sunnybrook Regional Hospital — Toronto, Canada

• Boulder Neurosurgical Associates — Boulder, Colorado, United States

• Seoul National University Bundang Hospital — Seongnam-si, Gyeonggi-do, South Korea

• Scripps Memorial Hospital La Jolla — La Jolla, California, United States
• Hoag Memorial Hospital Presbyterian — Newport Beach, California, United States
• Rancho Specialty Hospital — Rancho Cucamonga, California, United States
• University of California San Francisco — San Francisco, California, United States

Not specified

• Boulder Neurosurgical Associates — Boulder, Colorado, United States
• Total Spine Care — Canton, Connecticut, United States
• Middlesex Orthopedic Surgeons — Middletown, Connecticut, United States
• Center for Advanced Neuro and Spine — New Britain, Connecticut, United States

• BG Unfallklinik — Frankfurt am Main, Germany
• Schon Klinik Munchen — München, Germany
• UVN — Ružomberok, Slovakia

• Memorial Health University Medical Center — Savannah, Georgia, United States

Not specified

• Bergman Clinics — Naarden, Netherlands