1 Department of Neurological Surgery, University of Pittsburgh Medical Center, 200 Lothrop St, Suite B‑400, 15213, Pittsburgh, PA, USA. drpinarceltikci@gmail.com.
2 Department of Neurological Surgery, University of Pittsburgh Medical Center, 200 Lothrop St, Suite B‑400, 15213, Pittsburgh, PA, USA.
3 Department of Neurosurgery, Gazi University Faculty of Medicine, Ankara, Turkey.
4 Department of Radiology, Gazi University Faculty of Medicine, Besevler, Ankara, Turkey.
5 Department of Neurosurgery, Division of Pediatric Neurosurgery, Gazi University Faculty of Medicine, Ankara, Turkey.