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.
Frielingsdorf J, Franke A, Kühl HP, Rijcken E, Krebs W, Hess OM, Flachskampf FA, Hanrath P.Frielingsdorf J, et al. Among authors: kuhl hp.J Am Soc Echocardiogr. 1998 Aug;11(8):778-86. doi: 10.1016/s0894-7317(98)70052-5.J Am Soc Echocardiogr. 1998.PMID: 9719089
Frielingsdorf J, Franke A, Kühl HP, Hess OM, Flachskampf FA.Frielingsdorf J, et al. Among authors: kuhl hp.J Am Soc Echocardiogr. 2001 May;14(5):370-7. doi: 10.1067/mje.2001.112674.J Am Soc Echocardiogr. 2001.PMID: 11337682