something, you can't start treatment. >> espn says the nfl pull the funding. nfl and nih says that is not what happened. what happened? >> the nfl fired back almost immediately with a very strongly worded tweet from their public relations official. it says, espn's story is not accurate. nfl did not pull any funding. nih makes its own decisions and we can actually just go over to the nih statement. the nih statement says, the nfl funding commitment to their study remains intact. nfl is willing to contribute to this particular study. nih made the decision to fund the study in its entirety. now, i just want to break both of those statements down a little bit. the nfl coming out and saying, espn reporting isn't true. i obviously was not privy to the espn source reporting, nor am i in the nfl offices so none of us can tell you which version is true. i can tell you that the reporters on this espn story are the two most respected reporters in this field. they wrote a landmark book on