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.
Mohn G, van Hof-van Duin J, Fetter WP, de Groot L, Hage M.Mohn G, et al.Dev Med Child Neurol. 1988 Apr;30(2):232-44. doi: 10.1111/j.1469-8749.1988.tb04756.x.Dev Med Child Neurol. 1988.PMID: 3384203