Salim Yusuf (IMAGE) McMaster University Caption Salim Yusuf is principal investigator of the TIPS-3 study and director of the Population Health Research Institute of McMaster University and Hamilton Health Sciences in Hamilton, Canada. Credit McMaster University 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.