Juan Jesus Carrero (IMAGE) Karolinska Institutet Caption Juan Jesus Carrero, professor of epidemiology in the Department of Medical Epidemiology and Biostatistics at Karolinska Institutet. Credit Stefan Zimmerman 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.