[1] Rocky Mt Hosp Children, Denver Int Spine Ctr, Denver, CO USA
[2] Presbyterian St Lukes Med Ctr, Presbyterian St, Denver, CO USA
[3] Univ Calif San Francisco, Dept Neurosurg, Sch Med, San Francisco, CA USA
[4] Univ Kansas, Dept Orthoped Surg, Sch Med, Kansas City, KS USA
[5] San Diego Ctr Spinal Disorders, La Jolla, CA USA
[6] Swedish Neurosci Inst, Seattle, WA USA
[7] Washington Univ, Dept Orthoped Surg, Sch Med, St Louis, MO USA
[8] Univ Calif Davis, Dept Orthoped Surg, Sch Med, Sacramento, CA USA
[9] Hosp Special Surg, Dept Orthoped Surg, New York, NY USA
[10] Southwest Scoliosis Inst, Plano, TX USA
[11] Johns Hopkins Univ, Dept Orthoped Surg, Sch Med, Baltimore, MD USA
[12] Lenox Hill Hosp, Dept Orthoped Surg, New York, NY USA
[13] Duke Univ, Dept Neurosurg, Sch Med, Durham, NC USA
[14] Univ Virginia, Dept Neurosurg, Sch Med, Charlottesville, VA USA
[15] Denver Int Spine Ctr, 1601 East 19th Ave, Suite 6250, Denver, CO 80218 USA