1. Department of Otolaryngology–Head & Neck Surgery University of Iowa Hospitals and Clinics Iowa City Iowa
2. Department of Surgery, Section of Otolaryngology–Head & Neck Surgery University of Calgary Calgary Alberta Canada
3. Department of Otolaryngology–Head & Neck Surgery University of Auckland Auckland New Zealand
4. Minimally Invasive Surgery, Surgical Critical Care, Department of Surgery, Seattle VA Medical Center University of Washington Seattle Washington
5. Department of Otolaryngology & Communication Sciences Medical College of Wisconsin Milwaukee Wisconsin
6. Department of Microbiology and Immunology Medical College of Wisconsin Milwaukee Wisconsin