[1] Univ Florida, Coll Med, Gainesville, FL 32611 USA
[2] Univ Florida, Dept Neurosurg, Gainesville, FL USA
[3] Kansas City Univ, Coll Osteopath Med, Kansas City, MO USA
[4] Univ Houston, Tilman J Fertitta Family Coll Med, Houston, TX USA
[5] Case Western Reserve Univ, Univ Hosp Cleveland, Dept Neurosurg, Med Ctr, Cleveland, OH USA
[6] Mem Sloan Kettering Canc Ctr, Dept Neurosurg, New York, NY USA
[7] Ascens St Marys Hosp, Dept Neurol Surg, Saginaw, MI USA
[8] Sinai Hosp & LifeBridge Hlth Syst, Dept Neurosurg, Baltimore, MD USA