Marica Leone (IMAGE) Karolinska Institutet Caption Marica Leone, PhD candidate at the Department of Medical Epidemiology and Biostatistics at Karolinska Institutet. Credit Private photo 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.