[1] Vanderbilt Univ, Med Ctr, Dept Neurosurg, Nashville, TN USA
[2] Vanderbilt Univ, Vanderbilt Inst Global Hlth, Med Ctr, Nashville, TN USA
[3] Univ Ibadan, Coll Med, Dept Surg, Div Neurosurg, Ibadan, Nigeria
[4] Harvard Univ, Program Global Surg & Social Change, Boston, MA USA
[5] Duke Univ, Sch Med, Dept Neurosurg, Div Global Neurosurg & Neurol, Durham, NC USA
[6] Univ Wisconsin, Sch Med & Publ Hlth, Dept Neurol Surg, Madison, WI USA