1. Division of Cardiovascular Medicine,
2. Department of Medicine,
3. Echocardiography Imaging Center, Cardiovascular Heath, Stanford Health Care, and
4. Division of Pulmonary, Allergy and Critical Care Medicine,
5. Department of Emergency Medicine, Stanford University, Stanford, California; and
6. Division of Hospital Medicine,
7. Division of Pulmonary and Critical Care Medicine, Intermountain Medical Center, Murray, Utah