1 Cardiology Division, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts; Cardiac Ultrasound Laboratory, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts.
2 Cardiology Division, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts.
3 Cardiology Division, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts; Cardiac Ultrasound Laboratory, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts; Cardiac Intensive Care Unit, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts; Pulmonary Embolism Response Team, Center for Vascular Emergencies, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts. Electronic address: ddudzinski@partners.org.