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.
Popper AN, Halvorsen MB, Kane A, Miller DL, Smith ME, Song J, Stein P, Wysocki LE.Popper AN, et al. Among authors: halvorsen mb.J Acoust Soc Am. 2007 Jul;122(1):623-35. doi: 10.1121/1.2735115.J Acoust Soc Am. 2007.PMID: 17614519