Sentence: Our report of a patient with severe tardive dyskinesia ( TD ) who has been exposed to both typical antipsychotic and clozapine , olanzapine and quetiapine during a 124-week follow-up period supports the possible beneficial effect of atypical antipsychotics on pre-existing symptoms of TD .
Drug combination annotation:
[{'class': 'POS', 'spans': ['clozapine', 'olanzapine', 'quetiapine'], 'is_context_needed': False}]