Sentence: Combining erythromycin , clarithromycin , or azithromycin with rifampin resulted in a significant ( P≤0.005 ) decrease in MPC and MPC/MIC ratio .
Drug combination annotation:
[{'class': 'POS', 'spans': ['erythromycin', 'rifampin'], 'is_context_needed': False}, {'class': 'POS', 'spans': [1, 3], 'is_context_needed': False}, {'class': 'POS', 'spans': [2, 3], 'is_context_needed': False}]