Amy Yu (IMAGE) University of Calgary Caption Amy Yu, a stroke neurologist at Sunnybrook Health Sciences Centre and assistant professor at the University of Toronto, is the lead author on a study done in collaboration with researchers at the Cumming School of Medicine. Credit Kevin Van Paassen, Sunnybrook Health Sciences Centre 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.