However, a 2004 assessment by the Danish Environmental Assessment Institute concluded that incineration was the most effective method for disposing of drink containers, even aluminium ones.

Recently the Institute of Medicine (IOM) reviewed more than 1,000 research papers on vitamin D and concluded that high levels of the supplement are unnecessary and could be harmful.

The Institute for Fiscal Studies concludes in its submission that: "Increasing fees without increasing loans and/or grants by the same value or more will result in a negative impact on participation".

The Institute of Cancer Epidemiology found a 50 percent higher cancer rate in the workers than in the general population, but could not conclude that radiation exposure was to blame.

An evaluation by Public/Private Ventures and the Search Institute concluded, "Though there are some programmatic successes, they are scattered and modest in scope and size."

After running the chancellor's numbers through its calculator, the Institute for Fiscal Studies concludes that middling Britons will suffer a squeeze on their living standards lasting no less than 13 years.

The Institute of Medicine's 2003 report on Microbial Threats to Health concluded "Clearly, a decrease in the inappropriate use of antimicrobials in human medicine alone is not enough.

In the same year, the Institute concluded a six-year long fund-raising campaign.

The Institute also concluded an upgrading of the south houses in 2006.