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Lions linebacker DeAndre Levy is publicly questioning the NFL about its employment of a questionable doctor.

(Mike Mulholland | MLive.com)

ALLEN PARK -- Many former NFL players have blasted the league for its handling of concussions and brain injuries throughout the years. Few active players have.

But DeAndre Levy is speaking up.

Pellman has been the subject of several exhaustive pieces as the league grapples with the concussion issue, including this one from ESPN and this one from Deadspin. And this one from Sports On Earth.

His work to downplay the effects of concussions are well known by this point. He chaired the Mild Traumatic Brain Injury Committee, despite being a rheumatologist with no expertise in brain research, and used his position to discredit research and doctors about concussions.

He was part of a panel of NFL doctors who said in a series of papers it was OK to return to games after suffering brain injuries. He also was one of the leading opponents of Bennet Omalu, the first doctor to publish data linking football players to CTE. (And the subject of the 'Concussion' film that starred Will Smith and was released last year.)

Yet, apparently, the NFL continues to employ Pellman.

Some players question the league privately.

Now Levy is doing it publicly.

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