**Author details**

Tugrul Cem Unal<sup>1</sup> \* and Aydin Aydoseli<sup>2</sup>

\*Address all correspondence to: tugrulcem@gmail.com

1 Department of Neurosurgery, Tunceli State Hospital, Tunceli, Turkey

2 Department of Neurosurgery, Istanbul University, Istanbul Faculty of Medicine, Istanbul, Turkey
