1. Pacific Neuroscience Institute Santa Monica California U.S.A.
2. Division of Otolaryngology–Head and Neck Surgery University of British Columbia Faculty of Medicine Vancouver British Columbia Canada
3. Department of Otolaryngology–Head and Neck Surgery Western University London Ontario Canada
4. Department of Otolaryngology–Head and Neck Surgery Stanford University School of Medicine Stanford California U.S.A.
5. Department of Environmental Health Harvard T.H. Chan School of Public Health Boston Massachusetts U.S.A.
6. Department of Otolaryngology–Head and Neck Surgery Cedars‐Sinai Los Angeles California U.S.A.