ALL	Acute Lymphoblastic Leukemia
AML	Acute Myeloid Leukemia
CI	Confidence Interval
ED	Emergency Department
HLH	Hemophagocytic Lymphohistiocytosis
HR	Hazard Ratio
IQR	Interquartile Range
KASCH	King Abdullah Specialized Children’s Hospital
KM	Kaplan–Meier
NHL	Non-Hodgkin Lymphoma
PRISM	Pediatric Risk of Mortality
WHO	World Health Organization