Study authors (IMAGE) University of Bonn Caption Prof. Dr. Susanne Schoch and Prof. Dr. Dirk Dietrich from the University Hospital Bonn Credit © Barbara Frommann/ University of Bonn Usage Restrictions Please use this image only in connection with the press release. License Original 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.