Exclusion Criteria
pre-treatment with cytostatic drugs
boolean
steroid pre-treatment with >= 1 mg/kg/d for > two weeks during the last month before diagnosis
boolean
treatment started according to another protocol
boolean
underlying diseases that prohibit treatment according to the protocol
boolean
ALL diagnosed as second malignancy steroid pre-treatment with >= 1 mg/kg/d for more than two weeks during the last month before diagnosis
boolean