The primary end point was event-free survival (EFS).
主要终点为无病生存期（EFS）。
2
Objective To investigate the relationship between immunophenotype and event-free survival (EFS) in children with acute lymphoblastic leukemia (ALL).
目的探讨儿童急性淋巴细胞白血病(all)免疫表型与无病生存期(EFS)的关系。
3
The researchers found that median FGF-23 levels were significantly higher in those who died or reached end-stage renal disease than in those who remained event-free.