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.
Roberts JD, Polaner DM, Lang P, Zapol WM.Roberts JD, et al.Lancet. 1992 Oct 3;340(8823):818-9. doi: 10.1016/0140-6736(92)92686-a.Lancet. 1992.PMID: 1357245
Roberts JD Jr, Roberts CT, Jones RC, Zapol WM, Bloch KD.Roberts JD Jr, et al. Among authors: roberts ct.Circ Res. 1995 Feb;76(2):215-22. doi: 10.1161/01.res.76.2.215.Circ Res. 1995.PMID: 7834832
Lee JS, Adrie C, Jacob HJ, Roberts JD Jr, Zapol WM, Bloch KD.Lee JS, et al. Among authors: roberts jd jr.Circ Res. 1996 Feb;78(2):337-42. doi: 10.1161/01.res.78.2.337.Circ Res. 1996.PMID: 8575078