The authors have replied as follows:

Developmental Medicine & Child Neurology 1989 Vol. 31; Iss. 6

The authors have replied as follows:

Ann Johnson, Hazel Ashurst
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Volume:
31
Year:
1989
Language:
english
Pages:
1
DOI:
10.1111/j.1469-8749.1989.tb04084.x
File:
PDF, 89 KB
english, 1989
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