http://www.einstein.yu.edu - Former Army specialist Dan Hof, a veteran of the conflict in Iraq, sustained a concussion in 2005 while deployed and has been struggling with troubling symptoms of his injury ever since. Dan is one of the 20 participants in a study of mild traumatic brain injury in veterans led by Michael Lipton, M.D., Ph.D., at Albert Einstein College of Medicine. In cooperation with the Resurrecting Lives Foundation, Dr. Lipton is using advanced MRI techniques and cognitive tests to