Affiliation: | (1) Biomedical Engineering and Instrumentation Program, National Institutes of Health, Building 13, Room 3W13, 20892 Bethesda, MD, USA;(2) Ballou Senior High School, Washington, DC, USA;(3) Cardiac Energetics, NHLBI, National Institutes of Health, Building 13, Room 3W13, 20892 Bethesda, MD, USA |