1. Institute for Neurosurgical Pathophysiology, Johannes Gutenberg-University Mainz, Germany.
2. Harvey Cushing Neurooncology Laboratories, Department of Neurosurgery, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts.
3. Department of Neurosurgery, HELIOS Dr. Horst-Schmidt-Kliniken, Wiesbaden, Germany.
4. Department of Otolaryngology–Head and Neck Surgery, Ruprecht-Karls-University, Heidelberg, Germany.