Tim Rollenske (IMAGE) University of Bern Caption Dr. Tim Rollenske, Department for BioMedical Research (DBMR), University of Bern, and University Hospital for Visceral Surgery and Medicine, Inselspital, Bern University Hospital Credit Courtesy of T. Rollenske Usage Restrictions No restrictions. License Public Domain 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.