Petri Kajonius, University of Gothenburg (IMAGE) University of Gothenburg Caption This is Petri Kajonius. Credit Petri Kajonius. The University of Skövde. Usage Restrictions None 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.