Gilles Dagenais (IMAGE) McMaster University Caption Gilles Dagenais, professor emeritus of medicine at Laval University Credit IUCPQ-UL Usage Restrictions To be used with stories about this research 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.