Martin Eklund and Tobias Nordström (IMAGE) Karolinska Institutet Caption Martin Eklund, associate professor at the Department of Medical Epidemiology and Biostatistics at Karolinska Institutet, and Tobias Nordström, associate professor of Urology at the Department of Clinical Sciences, Danderyd Hospital 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.