Justin Yu, M.D. (IMAGE) University of Pittsburgh Caption Justin Yu, M.D., lead author of the study and assistant professor of pediatrics in the University of Pittsburgh School of Medicine Credit UPMC Usage Restrictions For use with embargoed release License Original 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.