1. Johns Hopkins University School of Medicine, Baltimore, Maryland
2. Center on Aging and Health, Johns Hopkins Medical Institutions, Baltimore, Maryland
3. University of Oklahoma College of Medicine, Oklahoma City
4. Drexel University College of Medicine, Philadelphia, Pennsylvania
5. Center on Aging and Health, Johns Hopkins Medical Institutions, Baltimore, Maryland5Department of Otolaryngology–Head and Neck Surgery, The Johns Hopkins University, Baltimore, Maryland6Department of Epidemiology, The Johns Hopkins University, Baltimore,