Institution: | (1) Division of Cardiology, Department of Medicine, The Johns Hopkins Medical Institutions, Baltimore, MD, USA;(2) Department of Epidemiology, The Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA;(3) The Johns Hopkins School of Medicine, The McKusick-Nathans Institute of Genetic Medicine, Baltimore, MD, USA;(4) The Johns Hopkins Hospital, 600 N. Wolfe St., Carnegie 568, Baltimore, MD 21287, USA |