Institution: | a Ciccarone Preventive Cardiology Center, Johns Hopkins University School of Medicine, Baltimore, Maryland b Department of Internal Medicine, Boston University, Boston, Massachusetts c Division of Cardiology, Harbor-UCLA Medical Center Research and Education Institute, Torrance, California d Division of Cardiology, Brigham and Womens' Hospital, Boston, Massachusetts e Department of Radiology, Beth Israel Deaconess Medical Center, Boston, Massachusetts f Division of Cardiology, Emory University, Atlanta, Georgia |