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Lynne M Boddy*, Zoe R Knowles, Ian G Davies, Genevieve L Warburton, Kelly A Mackintosh, Laura Houghton and Stuart J Fairclough
* Corresponding author: Lynne M Boddy L.M.Boddy@ljmu.ac.uk
BMC Public Health 2012, 12:710 doi:10.1186/1471-2458-12-710