Tracey G. Simon (IMAGE) Karolinska Institutet Caption Tracey G. Simon, researcher at the Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, and hepatologist at Massachusetts General Hospital and Harvard Medical School. Credit Massachusetts General Hospital 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.