Sentence: In 23 adult patients , surgery , postoperative radiotherapy ( 60 Gy in 30 daily fractions within 6 weeks ) , and adjuvant modified chemotherapy ( procarbazine 60 mg/m(2 ) on Days 1 - 14 , lomustine 100 mg/m(2 ) on Day 1 , and vincristine 1.4 mg/m(2 ) [ maximum 2 mg ] on Days 1 and 8) were administered every 6 weeks for up to six cycles or until progression occurred .
Drug combination annotation:
[{'class': 'POS', 'spans': ['procarbazine', 'lomustine', 'vincristine'], 'is_context_needed': True}]