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.
Miller BA, Foster K, Robishaw JD, Whitfield CF, Bell L, Cheung JY.Miller BA, et al. Among authors: cheung jy.Blood. 1991 Feb 1;77(3):486-92.Blood. 1991.PMID: 1899345Free article.