Russell de Souza (IMAGE) McMaster University Caption Russell de Souza, first author of the study and assistant professor in the Department of Health Research Methods, Evidence, and Impact at McMaster University. Credit Photo courtesy 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.