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.
Harrison LB, Raben A, Pfister DG, Zelefsky M, Strong E, Shah JP, Spiro RH, Shaha A, Kraus DH, Schantz SP, Carper E, Bodansky B, White C, Bosl G.Harrison LB, et al. Among authors: pfister dg.Head Neck. 1998 Sep;20(6):497-503. doi: 10.1002/(sici)1097-0347(199809)20:6<497::aid-hed2>3.0.co;2-h.Head Neck. 1998.PMID: 9702535Clinical Trial.