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Lawlor, DA; Clark, H; Smith, GD; Leon, DA; (2006) Intrauterine growth and intelligence within sibling pairs: Findings from the Aberdeen children of the 1950s cohort. Pediatrics, 117 (5). E894-E902. ISSN 0031-4005 DOI: https://doi.org/10.1542/peds.2005-2412 Full text not available from this repository.