Sentence: This is the first paper suggesting the possibility of combination treatment of tamoxifen with risperidone in breast cancer patients , providing a conceivable resolution of tamoxifen-induced side effects without interfering the efficacy of tamoxifen against breast cancer .
Drug combination annotation:
[{'class': 'POS', 'spans': ['tamoxifen', 'risperidone'], 'is_context_needed': False}]