Photo of researchers (IMAGE) Karolinska Institutet Caption Researchers Charlotte Thålin and Sebastian Havervall at Danderyd Hospital and Karolinska Institutet. Credit Ludvig Kostyal 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.