Studies of this diet have had important methodological flaws, and the scientific evidence is not adequate to make treatment recommendations.

However, many of these studies had serious methodological flaws.

However, many of these studies suffer from methodological flaws, and so may not be entirely reliable.

The pharmaceutical industry contends these studies have serious methodological flaws.

In contrast, he included studies that to other legal scholars did appear to suffer from methodological flaws.

Previous studies had methodological flaws, and their results were contradictory.

This study was criticized as having various methodological flaws.

A lot of people have pointed out the methodological flaw here in terms of how voters?

He rejected the contention that Gallup had any methodological flaws.

Normally, the results would have been left to stand until independent researchers had either corroborated the finding or found the methodological flaw.