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.
Kishon Y, Oh JK, Schaff HV, Mullany CJ, Tajik AJ, Gersh BJ.Kishon Y, et al. Among authors: schaff hv.Mayo Clin Proc. 1992 Nov;67(11):1023-30. doi: 10.1016/s0025-6196(12)61116-1.Mayo Clin Proc. 1992.PMID: 1434862
Blackshear JL, Safford RE, Lane GE, Freeman WK, Schaff HV.Blackshear JL, et al. Among authors: schaff hv.J Am Soc Echocardiogr. 1991 Sep-Oct;4(5):485-90. doi: 10.1016/s0894-7317(14)80382-9.J Am Soc Echocardiogr. 1991.PMID: 1742036