Sentence: Therapy included 4 or 8 intensive therapy elements N1 ( Etoposide 125 mg/m2 day 1 - 4 , Vindesine 3 mg/m2 day 1 , Cisplatin 40 mg/m2 day 1 - 4 ) and N2 ( Vincristine 1.5 mg/m2 day 1 + 8 , Dacarbazine 200 mg/m2 day 1 - 5 , Ifosfamide 1500 mg/ m2 day 1 - 5 , Doxorubicin 30 mg/m2 day 6 + 7 ) in alternating order .
Drug combination annotation:
[{'class': 'POS', 'spans': ['Etoposide', 'Cisplatin', 'Vindesine'], 'is_context_needed': True}, {'class': 'COMB', 'spans': [2, 3, 4, 5], 'is_context_needed': True}]