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Baker PR, Francis DP, Hall BJ, Doyle J, Armstrong R.Baker PR, et al.J Public Health (Oxf). 2010 Sep;32(3):448-50. doi: 10.1093/pubmed/fdq058. Epub 2010 Aug 2.J Public Health (Oxf). 2010.PMID: 20679286Free article.No abstract available.