"The study came to the conclusion that there is no scientific proof of a relationship," he said.

"When you're talking about people dying, you cannot wait for scientific proof."

So to take action, we need scientific proof that the deer are a real problem.

And many patients are being given the drug without the scientific proof it is really helping them.

There has however been no scientific proof of their effectiveness.

We have scientific proof that you are simply one of the artificial brothers.

Now there's a whole new world of scientific proofs open to them.

Are you aware of any legitimate scientific proof that this is so?

Despite intensive research, however, no scientific proof of this has yet been produced.

It therefore does not have the same value as scientific proof.