Furthermore, this type of evolutionary progress will be hard for studies that compare the performance of any existing schools to capture.

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The largest group of studies on the subject are in progress, including immunotherapy for people with peanut and milk allergies, she said.

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Genentech has already revealed that in separate studies, its Avastin delayed the progress of both lung and breast cancer.

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The global rankings are the result of two studies - the Trends in International Mathematics and Science Study (TIMSS) and the Progress in International Reading Literacy Study (PIRLS).

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Ironically, the overpromise in the promotion of prostate cancer screening has prolonged the uncertainties and slowed our progress in prostate cancer medicine by dissuading men from entering studies to improve screening.

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