Sentence: The aim of this single-blind , randomized , controlled trial was to investigate treatment efficacy and safety of aripiprazole as an adjunct to valproic acid ( Ari+Val ) , compared with haloperidol plus valproic acid ( Hal+Val ) , in acute manic patients .
Drug combination annotation:
[{'class': 'POS', 'spans': ['aripiprazole', 'valproic'], 'is_context_needed': True}, {'class': 'POS', 'spans': [2, 3], 'is_context_needed': True}]