pubmed:affiliation |
Cardiac Ultrasound Laboratory, Cardiovascular Research Center, and Cardiothoracic Surgery Department, Massachusetts General Hospital and Harvard Medical School, Boston, MA 02114, USA.
|
pubmed:publicationType |
Journal Article,
Comparative Study,
Research Support, U.S. Gov't, Non-P.H.S.,
Research Support, Non-U.S. Gov't,
Research Support, N.I.H., Extramural
|