An official website of the United States government
The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before
sharing sensitive information, make sure you’re on a federal
government site.
The site is secure.
The https:// ensures that you are connecting to the
official website and that any information you provide is encrypted
and transmitted securely.
Porter TR; 2014 Guidelines for the Cardiac Sonographer in the Performance of Contrast Echocardiography Writing Group.Porter TR, et al.J Am Soc Echocardiogr. 2014 Dec;27(12):1359. doi: 10.1016/j.echo.2014.09.003. Epub 2014 Oct 14.J Am Soc Echocardiogr. 2014.PMID: 25441333No abstract available.
Porter TR, Xie F, Kricsfeld A, Deligonul U, Kilzer K.Porter TR, et al.J Am Soc Echocardiogr. 1996 Jul-Aug;9(4):437-41. doi: 10.1016/s0894-7317(96)90114-5.J Am Soc Echocardiogr. 1996.PMID: 8827626
Porter TR, Xie F, Li S, D'Sa A, Rafter P.Porter TR, et al.J Am Soc Echocardiogr. 1996 Sep-Oct;9(5):599-605. doi: 10.1016/s0894-7317(96)90054-1.J Am Soc Echocardiogr. 1996.PMID: 8887861