Agneta Siegbahn (IMAGE) Uppsala University Caption Agneta Siegbahn, Professor of Clinical Coagulation Science at the Department of Medical Sciences, Uppsala University, Sweden. Credit Hans Siegbahn Usage Restrictions Credit must be given to the creator. License CC BY 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.