1. Department of Otolaryngology‐Head and Neck Surgery Mayo Clinic Rochester Minnesota USA
2. Department of Otolaryngology‐Head and Neck Surgery Stanford University School of Medicine Palo Alto California USA
3. Department of Biomedical Statistics and Informatics Mayo Clinic Rochester Minnesota USA
4. Department of Neurological Surgery Mayo Clinic Rochester Minnesota USA
5. Department of Otolaryngology‐Head and Neck Surgery Johns Hopkins University School of Medicine Baltimore Maryland USA