Dr. Paul O'Byrne, McMaster University (IMAGE) McMaster University Caption O'Byrne is a respirologist, a professor of medicine at McMaster University's Michael G. DeGroote School of Medicine and a clinician scientist at the Firestone Institute for Respiratory Health at St. Joseph's Healthcare Hamilton. Credit JD Howell Usage Restrictions To be used with this research 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.