Todd Costantini, MD, UC San Diego Health (IMAGE) University of California - San Diego Caption Todd Costantini, MD, trauma medical director at UC San Diego Health and the site principal investigator for the HOBIT study. Credit UC San Diego Health Sciences 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.