1. Department of Otolaryngology‐Head and Neck Surgery Stanford University School of Medicine Stanford California U.S.A.
2. Department of Otolaryngology‐Head and Neck Surgery University of Cincinnati School of Medicine Cincinnati Ohio U.S.A.
3. Clinical Virology Laboratory Stanford Health Care Stanford California U.S.A.
4. Division of Allergy and Immunology, Department of Pediatrics Stanford University School of Medicine Stanford California U.S.A.
5. Divisions of Cardiothoracic Anesthesiology and Critical Medicine, Department of Anesthesiology, Perioperative and Pain Medicine Stanford University School of Medicine Stanford California U.S.A.
6. Shasta‐ENT Medical Group Redding California U.S.A.
7. Department of Pathology Stanford University School of Medicine Stanford California U.S.A.
8. Division of Infectious Diseases and Geographic Medicine, Department of Medicine Stanford University School of Medicine Stanford California U.S.A.
9. Department of Otolaryngology‐Head and Neck Surgery Veterans Affairs Palo Alto Health Care System Palo Alto California U.S.A.