1. Institute of Neurosurgical Pathophysiology, Johannes Gutenberg–University Mainz, Mainz, Germany.
2. Department of Neurosurgery, and Johannes Gutenberg–University Mainz, Mainz, Germany.
3. Department of Neurosurgery, HELIOS Dr. Horst-Schmidt-Kliniken, Wiesbaden, Germany.
4. Department of Neurology, Johannes Gutenberg–University Mainz, Mainz, Germany.