Perhaps one of these: http://www.newyorker.com/reporting/2007/12/10/071210fa_fact_gawande http://www.newyorker.com/reporting/2007/12/10/071210fa_fact_... http

Perhaps one of these: http://www.newyorker.com/reporting/2007/12/10/071210fa_fact_gawande http://www.newyorker.com/reporting/2007/12/10/071210fa_fact_... http://www.nytimes.com/2008/01/22/health/22brod.html http://www.nytimes.com/2008/01/22/health/22brod.html http://www.nytimes.com/2004/12/25/health/25medicine.html http://www.nytimes.com/2004/12/25/health/25medicine.html EDITED to add: HN discussion of the first of those at http://news.ycombinator.com/item?id=87167 http://news.ycombinator.com/item?id=87167 . EDITED again to add: http://www.healthreform.gov/reports/success/michigan.html http://www.healthreform.gov/reports/success/michigan.html has the 2/3 figure in it and has been mentioned in at least one comment on HN.