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This is a clear, well-organized account of a longitudinal study of several hundred prematurely born and full-term children, born in Edinburgh in 1952 and 1953. Starting with 595 children, 251 singletons weighing 5 lb 8 oz or less at birth, 119 full-term singletons as controls and 225 twins of all birth weights, Dr. Drillien was able to follow nearly 90 percent to school age. Besides the main survey group, she added a supplementary group of children of very low birth weight (3 lb or less) born between 1948 and 1960; in all, 110 children in this birth weight group were traced, and 72 followed to school age.
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Margaret Dann (1964) studied this question.
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