1. Department of Otorhinolaryngology-Head and Neck Surgery; Seoul National University Hospital; Seoul Korea
2. Center for Minimally Invasive Skull Base Surgery; Seoul National University Hospital; Seoul Korea
3. Department of Otolaryngology-Head and Neck Surgery; Stanford University; Stanford CA
4. Department of Neurosurgery; Seoul National University Hospital; Seoul Korea
5. Department of Computer Science; University of Calgary; Calgary AB Canada
6. Department of Computer Science; Stanford University; Stanford CA