[1] Health Sciences University,Department of Neurosurgery
[2] Haydarpasa Training and Research Hospital,Department of Neurosurgery
[3] Health Sciences University,Department of Machinery
[4] Umraniye Training and Research Hospital,Faculty of Mechanical Engineering
[5] Istanbul Gelisim Vocational School,Department of Neurosurgery
[6] Yıldız Technical University,Department of Neurosurgery
[7] Siverek State Hospital,undefined
[8] İstanbul Brain and Spine Center,undefined