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.
Waller BF, Rothbaum DA, Pinkerton CA, Cowley MJ, Linnemeier TJ, Orr C, Irons M, Helmuth RA, Wills ER, Aust C.Waller BF, et al. Among authors: rothbaum da.J Am Coll Cardiol. 1987 Apr;9(4):785-801. doi: 10.1016/s0735-1097(87)80234-6.J Am Coll Cardiol. 1987.PMID: 2951422Free article.