Dr. Stephen Hwang, St. Michael's Hospital (IMAGE) St. Michael's Hospital Caption Dr. Stephen Hwang is lead author of the study and director of the Centre for Urban Health Solutions of St. Michael's Hospital. Credit Courtesy of St. Michael's Hospital 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.