By now, you’re almost certainly aware that the Big Ten and Pac-12 have decided to postpone their fall football seasons until at least the spring semester.

The Pac-12 released its medical report recently, but the Big Ten has been largely silent about what information it used to reach the decision to cancel fall sports.

On Friday, University of Michigan cardiologist Venk Murthy took to Twitter to call a study the Big Ten reportedly used flawed. As you can see below, he says he’s not a football guy, but still calls for a retraction or correction for the study:

For now, the SEC, ACC and Big 12 are pushing forward with plans to play football this fall. What science have they used in those decisions?

It will be interesting to see if more conferences openly discuss the advice of medical experts like the Pac-12 did moving forward.