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标题: How many subjects are needed in a longitudinal birth cohort study? [打印本页]

作者: nuonuo0066 时间: 2015-4-18 18:36
标题: How many subjects are needed in a longitudinal birth cohort study?

题名	How many subjects are needed in a longitudinal birth cohort study?以
链接	http://www.ncbi.nlm.nih.gov/pubmed/?term=How+many+subjects+are+needed+in+a+longitudinal+birth+cohort+study%3F

作者: ahaqwg 时间: 2015-4-18 18:36
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作者: ahaqwg 时间: 2015-4-18 18:38
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