Jonas F Ludvigsson, Karolinska Institutet (IMAGE) Karolinska Institutet Caption Jonas F. Ludvigsson, professor in the Department of Medical Epidemiology and Biostatistics, Karolinska Institutet. Credit Gustav Mårtensson 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.