Dr. Reena Pattani, St. Michael's Hospital (IMAGE) St. Michael's Hospital Caption Medical residents in Canada may work longer hours per shift and per week than their counterparts in Europe, Australia and New Zealand but there is conflicting evidence whether shorter shifts improve patient safety, a new study has found. 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.