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Williams LK, Thornton L, Ball K, Crawford D.Williams LK, et al. Among authors: ball k.Public Health Nutr. 2012 Feb;15(2):291-8. doi: 10.1017/S1368980011001947. Epub 2011 Aug 11.Public Health Nutr. 2012.PMID: 21835079
Ball K, McNaughton SA, Le H, Andrianopoulos N, Inglis V, McNeilly B, Lichomets I, Granados A, Crawford D.Ball K, et al.BMC Public Health. 2013 May 14;13:466. doi: 10.1186/1471-2458-13-466.BMC Public Health. 2013.PMID: 23668896Free PMC article.Clinical Trial.