1. World Health Organization 2004 http://www.who.int/ healthinfo/global_burden_disease/GBD_report_2004update_ part2.pdf
2. World Health Organization 2002-2030 http://www.who.int/healthinfo/global_burden_disease/ projections/en/index.html
3. World Health Organization 2004 http://www.who.int/healthinfo/global_burden_disease/GBD_report_2004update_part3.pdf
4. American Heart Association/American Stroke Association 2008 http://www.americanheart.org/downloadable/heart/1200078608862HS_ Stats%202008.final.pdf
5. World Health Organization 2004 http://www. who.int/healthinfo/global_burden_disease/GBD_report_2004update_part3.pdf