1. Stanford University School of Medicine, Stanford, CA, USA
2. Department of Ophthalmology, Stanford University School of Medicine, Stanford, CA, USA
3. Trinity College of Arts and Sciences, Duke University, Durham, NC, USA
4. Department of Otolaryngology–Head and Neck Surgery, Stanford Hospital and Clinics, Stanford, CA, USA
5. Department of Neurosurgery, Stanford University School of Medicine, Stanford, CA, USA
6. Department of Otolaryngology–Head and Neck Surgery, Vanderbilt University Medical Center, Nashville, TN, USA