Sentence: a combination treatment : estramustine phosphate , cyproterone acetate or estrogens plus bromocriptine .
Drug combination annotation:
[{'class': 'POS', 'spans': ['estramustine', 'cyproterone'], 'is_context_needed': True}, {'class': 'POS', 'spans': [2, 3], 'is_context_needed': True}]