D'Angio 1981 II‐III UH.

Methods	See D'Angio 1981
Participants	Subgroup of patients from D'Angio 1981: 35 children with stage II or III disease with unfavourable histology (age and sex nm). For further information: see D'Angio 1981
Interventions	Chemotherapy without doxorubicin (N = 16) versus chemotherapy including doxorubicin (N = 19). For further information: see D'Angio 1981
Outcomes	Overall survival (defined as time from surgery to death without regard to cause) Event‐free survival (defined as the length of time between initial surgery and the earliest detection of abdominal recurrence, distant metastasis or death (whether or not tumour related))
Notes	See D'Angio 1981