[1] Univ Cape Town, Dept Surg, Div Neurosurg, Cape Town, South Africa
[2] Univ Cape Town, Neurosci Inst, Cape Town, South Africa
[3] Mackenzie Evangel Univ Hosp, Dept Neurosurg, Curitiba, Parana, Brazil
[4] Univ Philippines, Philippine Gen Hosp, Dept Neurosci, Div Neurosurg, Manila, Philippines
[5] Northwestern Univ, Feinberg Sch Med, Dept Neurolog Surg, Chicago, IL USA
[6] Addenbrookes Hosp, Dept Clin Neurosci, Div Neurosurg, Cambridge, England
[7] Univ Cambridge, Cambridge, England
[8] Univ Cambridge, NIHR Global Hlth Res Grp Acquired Brain & Spine I, London, England
[9] Henry Dunant Hosp Ctr, Dept Neurosurg 1, Athens, Greece
[10] Univ La Sabana, Sch Med, Translat Neurosci Res Lab, Chia, Colombia
[11] Fdn Santa Fe Bogota, Neurosurg Dept, Bogota, Colombia
[12] Aga Khan Univ, Nairobi, Kenya
[13] George Washington Univ, Sch Med & Hlth Sci, Dept Neurosurg, 2150 Penn Ave NW, Blountstown, DC 20037 USA
[14] Barrow Neurol Inst, Phoenix, AZ USA
[15] Univ Fed Parana, Dept Neurosurg, Curitiba, Parana, Brazil