Failure to disclose?

From the dotmednews.com article:

Under intense scrutiny for not revealing a relationship with Medtronic, Dr. David Polly, a well-known spine surgeon, has resigned from the American Academy of Orthopaedic Surgeons Board.
...
In a letter from Grassley to Medtronic, it was suggested that the payments to Polly could be considered a conflict of interest and that updates from Polly were given to Medtronic in violation of a set agreement with the University of Minnesota and might contain false information to the university's ethics committee.

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