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.
Percival EC, Hamilton HM.Percival EC, et al. Among authors: hamilton hm.Med J Aust. 1996 May 6;164(9):520-1. doi: 10.5694/j.1326-5377.1996.tb122159.x.Med J Aust. 1996.PMID: 8649284No abstract available.