Dr. Ann McKee, of the Boston University “brain bank” associated with the Sports Legacy Institute, recently spoke to the U.S. Army during a conference on how to protect soldiers’ brains. Her specialty is chronic traumatic encephalopathy (CTE) and finding this disease in brains sent for sampling.
The bulk of the 66 brains in her team’s “brain bank” are boxers and football players who had experienced repeated blows to the head during their careers. But she did have in her collection the brains of five former Soldiers. The disease, CTE, is the result of repeated trauma to the head.
“This disease does develop in military veterans — it really has been described in many different types of mild traumatic injury,” McKee said. “It’s less important how you get the injury, what’s important is that you had repetitive injury.
Dr. McKee, along with Dr. Benett Omalu, are pioneers in this field and a lot of what they have to say is unfiltered/censored by “bigger” entities.
The Concussion Blog 
I worked in the field of head injury when I was younger. Many athletes who were football players entered brain and spinal cord injury hospitals. If you could look into this you may find a number of families willing to help with your study as well as physicians for brain and spinal cord injury.