Affiliation: | (1) Department of Neurosurgery, Hacettepe University School of Medicine, Ankara, Turkey;(2) Birlik Mah. 19. Sokak, 30/10 Cankaya, Ankara, Turkey;(3) Department of Radiology, Hacettepe University School of Medicine, Ankara, Turkey;(4) Department of Neurosurgery, Yale University School of Medicine, New Haven, CT, USA |