But there is no proven link between diet and acne.

There is no proven causal link between the vaccine and serious adverse effects; all reports are related by time only.

There is a proven link that shows a strong correlation between illicit drug use and crime.

It is considered by some to be a degenerative process, although there has never been a proven link to aging.

For years, the Government said there was no proven link between the herbicide and the two types of cancer.

There is no proven link between breast cancer and household products, whether they be soap or water bottles.

This guy is the one proven link with the Children we've got.

Hopefully at some point he'll notice the far more proven link between not having a job and poverty.

The program also focuses on removing from office those government officials with proven links to illegal armed groups.

Administration scientists continue to insist that there is no proven link between C02 emissions and global warming.