In the new review, investigators will be sent out to seek information.

But the evidence that any of these treatments work is limited, according to a new review.

The improvements were so acute I decided a new review was in order.

"There is no need for a new environmental review on these same old questions."

The group's board, which had been expected to announce the choice yesterday, instead said it would meet in a week to consider the new review.

"We get about 500 new reviews each day posted by the community," he said.

The new review looked at 13 trials of the drugs which involved more than 150,000 patients.

As a result, the officials said, they have opened a new review of the earlier work.

He said the new reviews would be available on the phone line by the weekend.

The commission decided to open the new review to any agency that wanted to take part, whether or not it had been considered before.