Petter Brodin, Karolinska Institutet (IMAGE) Karolinska Institutet Caption Petter Brodin, researcher at SciLifeLab and the Department of Women's and Children's Health, Karolinska Institutet, Sweden. Photo: Ulf Sirborn Credit Ulf Sirborn 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.