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.
Hornberger J, Bloch DA, Hlatky MA, Baumgartner W.Hornberger J, et al. Among authors: bloch da.Am Heart J. 1999 Jun;137(6):1153-62. doi: 10.1016/s0002-8703(99)70376-5.Am Heart J. 1999.PMID: 10347345
Winograd CH, Lemsky CM, Nevitt MC, Nordstrom TM, Stewart AL, Miller CJ, Bloch DA.Winograd CH, et al. Among authors: bloch da.J Am Geriatr Soc. 1994 Jul;42(7):743-9. doi: 10.1111/j.1532-5415.1994.tb06535.x.J Am Geriatr Soc. 1994.PMID: 8014350