Ka He, Indiana University (IMAGE) Indiana University Caption Ka He, is chair of the Department of Epidemiology and Biostatistics at the IU School of Public Health-Bloomington. Credit IU Communications 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.