[1] Univ Tehran Med Sci, Sina Trauma & Surg Res Ctr, Tehran, Iran
[2] Lorestan Univ Med Sci, Shohada Hosp, Neurosurg Dept, Khorramabad, Iran
[3] Endocrinol & Metab Populat Sci Inst, Noncommunicable Dis Res Ctr, Tehran, Iran
[4] Univ Tehran Med Sci, Endocrinol & Metab Clin Sci Inst, Endocrinol & Metab Res Ctr, Tehran, Iran
[5] Univ Tehran Med Sci, Shariati Hosp, Dept Neurosurg, Tehran, Iran
[6] Thomas Jefferson Univ, Rothman Inst, Dept Orthoped & Neurosurg, Philadelphia, PA USA
[7] Univ Miami, Miller Sch Med, Neurosurg, Coral Gables, FL USA
[8] Univ Miami, Miller Sch Med, Miami Project Cure Paralysis, Coral Gables, FL USA
[9] Univ Hlth Network, Krembil Res Inst, Div Genet & Dev, Toronto, ON, Canada
[10] Univ Hlth Network, Toronto Western Hosp, Div Neurosurg, Toronto, ON, Canada
[11] Univ Toronto, Dept Surg, Toronto, ON, Canada
[12] Univ Toronto, Spine Program, Toronto, ON, Canada
[13] Universal Sci Educ & Res Network USERN, Tehran, Iran