Mattias Brunström, Umeå University (IMAGE) Umea University Caption This is Dr. Mattias Brunström, researcher at the Department of Public Health and Clinical Medicine, Umeå University and lead author. Credit Umeå University 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.