1 Department of Neurological Surgery, University of California, San Francisco, California, USA; Skull Base and Cerebrovascular Laboratory, University of California, San Francisco, California, USA.
2 Department of Neurological Surgery, University of California, San Francisco, California, USA; Skull Base and Cerebrovascular Laboratory, University of California, San Francisco, California, USA; Department of Otolaryngology Head and Neck Surgery, University of California, San Francisco, California, USA. Electronic address: arnau.benet@ucsf.edu.
3 Department of Neurological Surgery, University of California, San Francisco, California, USA.