the gpo cooperative ewing 's sarcoma study ( cess 81 with 10 months four-drug combination chemotherapy ( vincristine , actinomycin d , cyclophosphamide , and adriamycin = vaca ) and local control with surgery and/or radiation , following week 18 , resulted in a kaplan-meier estimated disease-free survival of 51 % after 6 1/2 years ( 51/93 patients disease-free ) .
C0010583
cyclophosphamide
C0077966
vaca