Sven Pettersson, Karolinska Institutet (image) Karolinska Institutet Share Print E-Mail Caption Sven Pettersson, Ph.D., is a Professor at Karolinska Institutet in Sweden and the LKC School of Medicine at NTU of Singapore. Credit John Sennett/Karolinska Institutet Usage Restrictions This image may only be published in connection to media reports about Sven Pettersson's research at KI or NTU. 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.