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.
Shapiro SM, Young E, Ginzton LE, Bayer AS.Shapiro SM, et al. Among authors: bayer as.J Am Soc Echocardiogr. 1992 Jan-Feb;5(1):48-51. doi: 10.1016/s0894-7317(14)80102-8.J Am Soc Echocardiogr. 1992.PMID: 1739470
Shapiro SM, Young E, De Guzman S, Ward J, Chiu CY, Ginzton LE, Bayer AS.Shapiro SM, et al. Among authors: bayer as.Chest. 1994 Feb;105(2):377-82. doi: 10.1378/chest.105.2.377.Chest. 1994.PMID: 8306732