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.
Blumberg N, Heal JM.Blumberg N, et al.Transfusion. 1992 Sep;32(7):688-9. doi: 10.1046/j.1537-2995.1992.32792391047.x.Transfusion. 1992.PMID: 1519333No abstract available.