[1] N Shore Med Ctr Salem, Peabody, MA USA
[2] Musculoskeletal Ctr, Peabody, MA USA
[3] Univ Calif, Dept Family Med, Los Angeles Ventura Cty Med Ctr, Ventura, CA USA
[4] Family Care Ctr, Ventura, CA USA
[5] Osteoporosis Ctr, Ventura, CA USA
[6] UMDNJ New Jersey Med Sch Newark, Newark, NJ USA
[7] Pain Management Overlook Pain Ctr, Summit, NJ USA
[8] Penn Hosp, Dept Orthopaed, Booth Bartolozzi Balderston Orthopaed PENN Orthop, Intervent Spine Program, Philadelphia, PA 19107 USA
[9] Texas Tech Univ Hlth Sci Ctr, Dept Anesthesiol & Pain Therapy, Lubbock, TX USA
[10] Texas Back Inst, Lubbock, TX USA