Eun-Jung Koo received her M.D. from Jeju National University and her Ph.D. from Pusan National University. She completed her residency in General Surgery at Dong-A University Hospital and fellowship training in Pediatric Surgery at Yonsei University Severance Children’s Hospital. She is currently working as a hospitalist physician at Seoul Medical Center. She previously worked as an Assistant Professor in the Department of Pediatric Surgery at Keimyung University Dongsan Medical Center. Her research topics mainly include: pediatric surgical diseases, developmental mechanisms of congenital conditions, and environmental factors affecting child health.