1. Rush University Medical Center, Department of Otolaryngology Head and Neck Surgery, 1611 W. Harrison, Suite 550, Chicago, IL 60612, USA
2. Wayne State University School of Medicine, 42 West Warren Avenue, Detroit, MI 48202, USA
3. Henry Ford Health System, Department of Otolaryngology Head and Neck Surgery, 2799 W. Grand Boulevard, Detroit, MI 48202, USA
4. Tulane University School of Medicine, Department of Surgery, 1430 Tulane Avenue, New Orleans, LA 70112, USA