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.
Ludwig E, Corneli PS, Anderson JL, Marshall HW, Lalouel JM, Ward RH.Ludwig E, et al. Among authors: ward rh.Circulation. 1995 Apr 15;91(8):2120-4. doi: 10.1161/01.cir.91.8.2120.Circulation. 1995.PMID: 7697839
Anderson JL, Carlquist JF, King GJ, Morrison L, Thomson MJ, Ludwig EH, Muhlestein JB, Bair TL, Ward RH.Anderson JL, et al. Among authors: ward rh.J Am Coll Cardiol. 1998 Mar 15;31(4):790-6. doi: 10.1016/s0735-1097(98)00007-2.J Am Coll Cardiol. 1998.PMID: 9525548Free article.