Abbreviations
HB Hepatoblastoma
OS Overall survival
EFS Event-free survival
PSM Propensity score matching
SIOPEL International Childhood Liver Tumors Strategy Group
NACT Neoadjuvant chemotherapy
COG Children’s Oncology Group
JPLT Japanese Study Group for Pediatric Liver Tumors
CHIC Children’s Hepatic Tumors International Collaboration
CIP Capital Institute of Pediatrics
US Upfront resection
AFP α-fetoprotein
PRETEXT PRETreatment EXTent of disease stages
PS Propensity score
PSM Propensity score matching
SMD Standardized mean difference
PFH Pure fetal histology
EMEF Epithelial mixed embryonal/fetal
MEM Mixed epithelial-mesenchymal
SCU Small cell undifferentiated