Sentence: Forty-two patients with stage III to IV resectable HNSCC and nasopharyngeal tumors received induction chemotherapy with two courses of cisplatin ( 20 mg/m2/d continuous infusion [ CI ] ) , fluorouracil ( 800 mg/m2/d CI ) , and leucovorin ( 500 mg/m2/d CI ; PFL ) for 4 days followed by concurrent therapy with cisplatin ( 100 mg/m2/d on days 1 and 22 ) and approximately 70 Gy of external-beam radiotherapy .
Drug combination annotation:
[{'class': 'POS', 'spans': ['cisplatin', 'fluorouracil', 'leucovorin'], 'is_context_needed': True}]