1. Department of Otolaryngology – Head and Neck Surgery, University of California, Irvine, Orange, California, USA.
2. Charles E. Schmidt College of Medicine, Florida Atlantic University, Boca Raton, Florida, USA.
3. Department of Otolaryngology – Head and Neck Surgery, The Ohio State University, Columbus, Ohio, USA.
4. Department of Surgery (Division of Otolaryngology), Yale University School of Medicine, New Haven, Connecticut, USA.