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Overall Survival (OS), defined as the probability of survival, regardless of disease status, from the time of HSCT to the time of death or of the last follow-up, according to the age group; 4-year OS was 95 ± 1% : 100% in group 1 (solid line), 95% in group 2 (dash-dotted line), and 88% in group 3 (dashed line) (P<0.001).
