However, the 2005 trial showed that it hadn't been the case.

Indeed, a large trial of patients with head injuries showed no benefit.

"On the one hand you'd like to have a completed trial to show for the historical record," he said yesterday.

Trials under way in several European countries show the wide reach of the network.

Further more recent trials have shown that treatment at an earlier stage of the disease gives better results.

But then a randomized trial showed it was a bad idea.

Trials in 1964 showed that the issues had been resolved, and the line too the class into use from 1965.

K3 was the first of the class to be completed, in May 1916 and trials showed numerous problems.

Trials showed a high level of protection against contemporary weapons.

The trials showed the material should last up to 10 times longer than ordinary paint.