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Letters to the editor
Diurnal variation in children: is stretching the answer?
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Editor,—We were interested to read the findings of Voss and Bailey concerning diurnal variation in the stature of children.1 De Puky was the first to suggest that changes in stature, which lengthens during sleep and shortens during daytime, were due to fluctuations in the water content of the intervertebral discs.2 Adams et al postulated that increased fluid within the discs …