Dr. Darrell Tan, St. Michael's Hospital (IMAGE) St. Michael's Hospital Caption A new study by Dr. Darrell Tan, an infectious disease specialist at St. Michael's Hospital in Toronto, looks at the cost-effectivenewss of the anti-HIV drug. 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.