Treatment characteristics and cumulative mortality in 345 2-year survivors of autologous BMT in childhood, by treatment period. (A) Demographic and treatment characteristics of 2-year survivors of autologous BMT in childhood, by treatment era. CTX, cyclophosphamide; NB, neuroblastoma; NHB, non-Hispanic black; NHW, non-Hispanic whites. (B) Cumulative mortality in 2-year survivors of autologous BMT in childhood, by treatment era.