Low Back Pain

• Orthopaedic Hospital Valdoltra — Ankaran, Slovenia
• University of Primorska, Science and Research Centre of Koper, Institute for Kinesiology Research — Koper, Slovenia
• University Medical Centre Ljubljana — Ljubljana, Slovenia
• University Medical Centre Maribor — Maribor, Slovenia

• Hospital for Special Surgery — New York, United States

Not specified

• Carlsbad, California, United States
• Miami, Florida, United States
• New York, United States
• Zanesville, Ohio, United States

• Opera Contract Research Organization SRL — Timișoara, Timiș County, Romania

• Johns Hopkins Hospital — Baltimore, Maryland, United States
• Walter Reed National Military Medical Center — Bethesda, Maryland, United States

• Cochin Hospital — Paris, France

• Kaiser Permanente Northern California — Redwood City, California, United States
• Kaiser Permanente Northern California — Roseville, California, United States
• University of Colorado — Denver, Colorado, United States
• Brigham and Women's Hospital — Boston, Massachusetts, United States

• Stanford University School of Medicine — Stanford, California, United States

• Emad Zarief Kamel Said — Asyut, Egypt