Marcel Ballin (IMAGE) Umea University Caption Marcel Ballin Doctoral student, Department of Community Medicine and Rehabilitation, Section of Geriatric Medicine, Umeå University Credit Mattias Pettersson Usage Restrictions No restrictions. License CC0 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.