Håkan Jonsson, Umea University (IMAGE) Umea University Caption Håkan Jonsson, Department of Epidemiology and Global Health, Umeå university Credit Lena Mustonen 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.