Chronic Pain

• IMC Study Site — Birmingham, Alabama, United States
• IMC Study Site — Sacramento, California, United States
• IMC Study Site — San Diego, California, United States
• IMC Study Site — Vista, California, United States

• Coastal Pain Spinal Diagnostic — Carlsbad, California, United States

• Herlev Hospital — Herlev, Denmark

Not specified

Not specified

Not specified

• Busan, South Korea
• Cheonan, South Korea
• Chungcheongbuk-Do, South Korea
• Chungju, South Korea

• VA Medical Center, San Francisco — San Francisco, California, United States

• LKH Feldkirch, Dept. of Surgery — Feldkirch, Austria
• Hospital Barmherzige Schwestern — Linz, Austria
• LK Weinviertel Mistelbach, Surgical Department — Mistelbach, Austria
• KH Göttlicher Heiland — Vienna, Austria

• Radboud University Nijmegen Medical Centre — Nijmegen, Netherlands