1 Department of Neurosurgery, Drexel University College of Medicine, Philadelphia, Pennsylvania, USA. Electronic address: [email protected].
2 Department of Neurosurgery, UT Southwestern Medical Center, Dallas, Texas, USA.
3 Neurosurgery PAC, Washington, DC; Department of Neurosurgery, Hackensack Meridian School of Medicine, Nutley, New Jersey, USA; Division of Neurosurgery, Mountainside Medical Center, Montclair, New Jersey, USA.