The officials said they have not found such a link.

A few studies, however, found possible links to the flying environment itself.

With each name he found a link in his own mind, and some of the confusion began to sort itself out.

But most previously published studies had found no such link.

They run in families, and experts have found a genetic link.

Studies so far have found no link between the implants and cancer.

The company also reviewed studies by other researchers and said it found no link.

For these students, repeated studies have found a clear link between college major and future earnings.

The Oregon study found a link to a single lot of 4,500 bottles from another company.