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.
Buechler C, Ullrich H, Ritter M, Porsch-Oezcueruemez M, Lackner KJ, Barlage S, Friedrich SO, Kostner GM, Schmitz G.Buechler C, et al. Among authors: ullrich h.Blood. 2001 Feb 15;97(4):981-6. doi: 10.1182/blood.v97.4.981.Blood. 2001.PMID: 11159526Free article.