1. AICR/WCRF 2007 American Institute for Cancer Research/World Cancer Research Fund: Food, Nutrition, Physical activity and the Prevention of Cancer Washington/London
2. CDC 2007 Leading causes of death http://www.cdc.gov/nchs/fastats/leading-causes-of-death.htm
3. Office of National Statistics 2009 Births and deaths in England and Wales 2008 http://www.ons.gov.uk/ons/rel/vsob1/birth-summary-tables-england-and-wales/2008-final-/index.html
4. WHO 2015 Obesity and overweight http://www.who.int/mediacentre/factsheets/fs311/en/
5. National Obesity Observatory 2010 International Comparison of Obesity Prevalence http://www.noo.org.uk/NOO_about_obesity/international/