Dr. Renske Lok, University of Groningen (IMAGE) University of Groningen Caption This is Renske Lok, first author of the paper and at the time of this study PhD student at the University of Groningen. Credit Renske Lok / University of Groningen Usage Restrictions With credit License Licensed 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.