Correction to: Acta Neurochirurgica (2018) 160:325–330

https://doi.org/10.1007/s00701-017-3417-4

Unfortunately, the funding information was missing in the original paper. The below should be the funding information.

This work has been developed in the framework of the PhD program in Medicine at the Universitat Autonoma de Barcelona.

Medicine Department, Universitat Autònoma de Barcelona (UAB), Barcelona, Spain has been added to the affiliation of Giuseppe Lucente.