"What you want is at least a two-year study on several species of animals."
He recommends a $4 million, two-year study in several states.
And perhaps at the end of the two-year study, they will know which is the most effective.
The Government is planning a two-year, $1 million study of the environmental impact of the road before it makes a final decision.
Among the placebo group, 23 percent, or 151 patients, had such an event during the two-year study.
The decision was taken after a two-year long study by the Department of Health.
But the two-year study was not large enough or long enough to show this.
After a two-year study, the agency now says it already has the authority to carry out such a program.
The order follows a two-year study of the issue by a special mayoral task force.
The company is now conducting a two-year study that will include 25 to 50 patients.