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van Jaarsveld CH, Johnson L, Llewellyn C, Wardle J.van Jaarsveld CH, et al. Among authors: wardle j.Twin Res Hum Genet. 2010 Feb;13(1):72-8. doi: 10.1375/twin.13.1.72.Twin Res Hum Genet. 2010.PMID: 20158309Free article.
Fisher A, van Jaarsveld CH, Llewellyn CH, Wardle J.Fisher A, et al. Among authors: wardle j.Pediatrics. 2012 Jun;129(6):1091-6. doi: 10.1542/peds.2011-1571. Epub 2012 May 14.Pediatrics. 2012.PMID: 22585775