1. Department of Neurosurgery, Institute of Clinical Neuroscience, Center for Endoscopic and Pituitary Skull Base Surgery, Southmead Hospital, Bristol, UK
2. Department of Otolaryngology-Head and Neck Surgery, University of Minnesota, Minneapolis, MN, USA
3. Department of ENT-Head and Neck Surgery, University Hospitals Bristol, Bristol, UK
4. Department of Neurosurgery, Stanford University School of Medicine, Stanford, CA, USA
5. Department of Medicine, Stanford University School of Medicine, Stanford, CA, USA