Chronic traumatic encephalopathy neuropathologic change is uncommon in men who played amateur American football oleh Grant L. Iverson, Grant L. Iverson, Grant L. Iverson, Grant L. Iverson, Grant L. Iverson, Pouya Jamshidi, Amanda O. Fisher-Hubbard, Amy Deep-Soboslay, Thomas M. Hyde, Thomas M. Hyde, Thomas M. Hyde, Joel E. Kleinman, Joel E. Kleinman, Joyce L. deJong, Claire E. Shepherd, Claire E. Shepherd, Lili-Naz Hazrati, Rudolph J. Castellani