John Maris (IMAGE) Children's Hospital of Philadelphia Caption Co-PI John M. Maris, MD, Giulio D'Angio Chair in Neuroblastoma Research at Children’s Hospital of Philadelphia Credit Children's Hospital of Philadelphia Usage Restrictions None 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.