(Q34323126)
Statements
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Improving retention of very old participants in longitudinal research: experiences from the Newcastle 85+ study (English)
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Thomas B L Kirkwood
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Joan Hughes
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Judith M Hunt
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Sally A H Barker
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June Edwards
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Joanna Collerton
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10 October 2014
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9
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10
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e108370
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10 October 2014
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Identifiers
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