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The present investigation relating to 662 boys and 620 girls born in Oxford between 1944 and 1948 was designed to observe the relation of sex and birth weight to growth during the first year of postnatal life. A majority of the babies (702) came from one private and two municipal welfare clinics in the city; the remainder (580) attended the Institute of Social Medicine. The latter are also enrolled in the Child Health Survey and are the subjects of a more intensive study of growth and development during the first five years of life
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Jessie Parfit (1951) studied this question.
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