1. Columbia University Vagelos College of Physicians and Surgeons, Department of Psychiatry, New York State Psychiatric Institute, New York
2. Department of Otolaryngology, Johns Hopkins Bloomberg School of Public Health, Department of Epidemiology, Johns Hopkins University, Center on Aging and Health, Johns Hopkins University School of Medicine
3. Department of Otolaryngology, Johns Hopkins Bloomberg School of Public Health, Department of Epidemiology, Johns Hopkins University School of Medicine
4. Columbia University Vagelos College of Physicians and Surgeons, Department of Psychiatry, New York State Psychiatric Institute, New York, USA