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. 2005 Sep;75(7):267-70.
doi: 10.1111/j.1746-1561.2005.00035.x.

How attrition impacts the internal and external validity of longitudinal research

Adam E Barry  1
Affiliations

How attrition impacts the internal and external validity of longitudinal research

Adam E Barry. J Sch Health. 2005 Sep.
No abstract available

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