1. IWK Health Centre, Division of Otolaryngology-Head and Neck Surgery, Department of Surgery; Dalhousie University; Halifax Nova Scotia Canada
2. Department of Pathology; Johns Hopkins School of Medicine; Baltimore Maryland U.S.A.
3. Pathogen Genomics Division; Translational Genomics Research Institute; Flagstaff Arizona U.S.A.
4. Department of Otolaryngology-Head and Neck Surgery; Columbia University; New York New York U.S.A.