1. Department of Otolaryngology–Head and Neck Surgery, New York Presbyterian Hospital and the College of Physicians and Surgeons, Columbia University, New York City
2. Department of Otolaryngology–Head and Neck Surgery, Thomas Jefferson University, Philadelphia, and the Department of Otolaryngology–Head and Neck Surgery, Allegheny University Hospitals, Philadelphia
3. Division of Biostatistics, Department of Public Health, New York Presbyterian Hospital and the College of Physicians and Surgeons, Columbia University, New York City