[1] Univ Tehran Med Sci, Sina Trauma & Surg Res Ctr, Tehran, Iran
[2] Univ Tehran Med Sci, Students Sci Res Ctr, Iranian Student Soc Immunodeficiencies, Tehran, Iran
[3] Universal Sci Educ & Res Network USERN, Universal Network Interdisciplinary Res Oral & Ma, Tehran, Iran
[4] Shahid Beheshti Univ Med Sci, Sch Publ Hlth & Safety, Dept Epidemiol, Tehran, Iran
[5] Shahid Sadoughi Univ Med Sci, Sch Publ Hlth, Res Ctr Hlth Technol Assessment & Med Informat, Yazd, Iran
[6] Universal Sci Educ & Res Network USERN, Tehran, Iran
[7] Univ Tehran Med Sci, Neurosci Inst, Brain & Spinal Cord Injury Res Ctr, Tehran, Iran
[8] Univ Tehran Med Sci, Shariati Hosp, Dept Neurosurg, Tehran, Iran
[9] Univ Tehran, Inst Biochem & Biophys, Tehran, Iran
[10] Univ Toronto, Spine Program, Toronto, ON, Canada