Clinical Pediatric Hematology-Oncology (Clin Pediatr Hematol Oncol, CPHO) is a peer-reviewed open-access journal and the official journal of the Korean Society of Pediatric Hematology-Oncology (KSPHO). CPHO aims to deliver new and important scientific knowledge and information regarding clinical and biological aspects of the pediatric hematology and oncology to contribute to healthcare of children, adolescents and young adults.