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The aim of the study was to measure the real effect of growth hormone (GH) treatment compared to the effect of placebo, since a placebo effect has been shown in other studies involving interventional growth therapy. Changes in height velocity and insulin-like growth factor I (IGF-I), relative to pretreatment variables, were examined during a 12-month, double-blind study.
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Christopher T. Cowell (1990) studied this question.
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