1. Health care costs: A primerhttp://www.kff.org/insurance/upload/7670-03.pdf
2. Health at a glance 2011: OECD indicatorshttp://www.oecd.org/dataoecd/12/16/49084355.pdf
3. Is healthy weight impossible for many Americans?http://today.msnbc.msn.com/id/47337275/ns/today-today_health/t/healthy-weight-impossible-many-americans/#.T-_d-fUkKSp
4. Populations are aging worldwidehttp://www.voanews.com/content/a-13-2005-11-30-voa69/397115.html
5. What does a new drug cost?http://www.sciencebasedmedicine.org/index.php/what-does-a-new-drug-cost/