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The case for continued follow-up of existing cohorts arises from the key attributes of cohorts that are already meeting the goals proposed by Potter for the creation of a new cohort. These attributes include the basic nature of ongoing cohorts in that they are, by design, hypothesis-driven and must adapt to emerging technologies over time. Importantly, cohort investigators must identify and address...
The existing prospective cohorts are providing key data that are guiding public health and clinical practice in many different areas. The existing cohorts can also provide the biological specimens and data to address genetic determinant of cancer now, rather than in a decade, and at far less cost than that proposed for a new national U.S. cohort. Review and funding mechanisms are needed to avoid disruption...
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