David Okonkwo, M.D., Ph.D. (IMAGE) University of Pittsburgh Caption Director, Neurotrauma Clinical Trials Center at UPMC and professor of neurological surgery, University of Pittsburgh School of Medicine Credit UPMC Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.