Sentence: After the operation , an alternating vincristine , doxorubicin , and cyclophosphamide/ifosfamide and etoposide ( IE ) regimen was given for eight cycles , and the patient survived for 66 mo without progression .
Drug combination annotation:
[{'class': 'POS', 'spans': ['vincristine', 'doxorubicin', 'etoposide'], 'is_context_needed': False}]