Ann Hellstrom (IMAGE) University of Gothenburg Caption Prof. Ann Hellstrom, Sahlgrenska Academy, University of Gothenburg. Credit Photo by Elin Lindstrom 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.