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Leary S, Ness A, Emmett P, Davey Smith G; ALSPAC Study Team.Leary S, et al.J Epidemiol Community Health. 2005 Jun;59(6):467-72. doi: 10.1136/jech.2004.029884.J Epidemiol Community Health. 2005.PMID: 15911641Free PMC article.