Sentence: The breast trial participants studied were those elderly enrolled between 1995 and 1997 and treated with doxorubicin and cyclophosphamide or this combination with paclitaxel .
Drug combination annotation:
[{'class': 'COMB', 'spans': ['doxorubicin', 'cyclophosphamide'], 'is_context_needed': True}, {'class': 'COMB', 'spans': [0, 1, 2], 'is_context_needed': True}]