Mark Ebell, University of Georgia (IMAGE) University of Georgia Caption Mark Ebell is a professor of epidemiology in the University of Georgia College of Public Health. Credit Paul Efland/University of Georgia 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.