Sentence: The rate of down-stage to pT1 or less was 59 % for methotrexate , vinblastine , doxorubicin and cisplatin , and 53 % for gemcitabine and carboplatin ( P = 0.624 ) .
Drug combination annotation:
[{'class': 'POS', 'spans': ['gemcitabine', 'carboplatin'], 'is_context_needed': True}]