1. Department of Otolaryngology-Head and Neck Surgery, Columbia University College of Physicians and Surgeons; NewYork-Presbyterian/Columbia University Medical Center; New York New York
2. Departments of Otolaryngology-Head & Neck Surgery and Epidemiology; Johns Hopkins University School of Medicine and Bloomberg School of Public Health; Baltimore Maryland U.S.A
3. Center on Aging and Health; Johns Hopkins Medical Institutions; Baltimore Maryland U.S.A