[1] Mem Bahcelievler Hosp, Dept Neurosurg, Istanbul, Turkiye
[2] Res Ctr Neurol, Dept Neurosurg, Moscow, Russia
[3] Guragaon & Fortis Hosp Vasant Kunj, Fortis Mem Res Inst, Dept Neurosurg, New Delhi, India
[4] Sanko Univ, Fac Med, Dept Neurosurg, Gaziantep, Turkiye
[5] Stanford Univ, Sch Med, Dept Neurosurg, Stanford, CA USA
[6] Saarland Univ, Med Ctr, Dept Neurosurg, Homburg, Germany