Sentence: Forty-seven percent of patients were sequentially treated with an amphotericin B-containing product followed by itraconazole , 31 % received itraconazole alone , and 7 % received an amphotericin B-containing product only .
Drug combination annotation:
[{'class': 'COMB', 'spans': ['amphotericin', 'itraconazole'], 'is_context_needed': True}]