Dr Greg Watkins, University of Sydney (IMAGE) University of Sydney Caption Dr Greg Watkins, School of Biomedical Engineering, University of Sydney Credit Dr Greg Watkins Usage Restrictions Please credit Dr Greg Watkins 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.