Question: when did the cdc develop the universal precautions
[{'answer': '1985 -- 88'}, {'provenance': [{'wikipedia_id': '32145', 'title': 'Universal precautions', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 529, 'bleu_score': 0.933831427081359, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 9130600448621069198}, 'section': 'Section::::Abstract.'}]}]