Karin Broberg, Karolinska Institutet (IMAGE) Karolinska Institutet Caption Karin Broberg, Professor at the Department of Environmental Medicine, Karolinska Institutet, and the study's last author. Credit IMM 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.