Back to matchesWe found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleDr. Crichton has replied as follows:.AuthorsCRICHTON, J. U.PublicationDevelopmental Medicine & Child Neurology, 1982, Vol 24, Issue 4, p396ISSN0012-1622Publication typeArticleDOI10.1111/j.1469-8749.1982.tb13637.x