[1] Univ Cape Town, Dept Neurosurg, Cape Town, South Africa
[2] Univ Cape Town, Neurosci Inst, Cape Town, South Africa
[3] George Washington Univ, Sch Med & Hlth Sci, Washington, DC USA
[4] George Washington Univ, Milken Inst Sch Publ Hlth, Washington, DC USA
[5] Aga Khan Univ Hosp, Dept Neurosurg, Nairobi, Kenya
[6] Ahmadu Bello Univ, Dept Neurosurg, Zaria, Nigeria
[7] Univ Global Hlth Equ, Dept Surg, Kigali, Rwanda
[8] George Washington Univ, Dept Neurosurg, Washington, DC 20052 USA
[9] Barrow Neurol Inst, Phoenix, AZ 85013 USA