Christina Master, MD (IMAGE) Children's Hospital of Philadelphia Caption Christina L. Master, MD, FAAP, CAQSM, FACSM, is a sports medicine pediatrician at CHOP with expertise in primary care sports medicine and brain injury medicine. Credit Children's Hospital of Philadelphia 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.