Dawid Kielak, Bielefeld University (image) Bielefeld University Share Print E-Mail Caption This is Dawid Kielak. Credit Magdalena Kielak Usage Restrictions the image may only be used with appropriate caption or credit. Share Print E-Mail 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.