Dr. Darrell Tan, St. Michael's Hospital (IMAGE) St. Michael's Hospital Caption Dr. Darrell Tan, lead author of the guidelines, is an infectious disease physician and scientist at St. Michael's Hospital in Toronto. 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.