1 Department of Neurosurgery, People's Friendship University, Moscow, Russia. Electronic address: Danielencarnacion2280@gmail.com.
2 Department of Neurosurgery, People's Friendship University, Moscow, Russia.
3 Department of Neurosurgery, Medical Park Ankara Hospital, Ankara, Turkey; Department of Neurosurgery, School of Medicine, Yuksek Ihtisas University, Ankara, Turkey.
4 Department of Neurosurgery, Bhawani Hospital and Research Center, Birgunj, Nepal.
5 Department of Neurosurgery, Trauma and Gamma knife Center, Cannizzaro Hospital, Catania, Italy.
6 Neurosurgery Unit, Department of Head and Neck Surgery, Garibaldi Hospital, Catania, Italy.