1. From the Department of Health Policy and Health Services Research, Boston University Goldman School of Dental Medicine, Boston, MA (TD and MN); the Jean Mayer US Department of Agriculture Human Nutrition Research Center on Aging, Tufts University, Boston, MA (BD-H); and the Divisions of Aging and Rheumatology, Immunology, and Allergy, Brigham and Women’s Hospital, Boston, MA (HAB-F)