{"nct_id":"NCT01181310","title":"Placebo-Controlled Crossover Study to Evaluate Donepezil and MK-3134 for Reversal of Cognitive Impairment Associated With Scopolamine Administration (3134-005)(COMPLETED)","status":"COMPLETED","status_verified_date":"2015-11","start_date":"2007-06","start_date_type":null,"primary_completion_date":"2007-10","primary_completion_date_type":"ACTUAL","completion_date":"2007-10","completion_date_type":"ACTUAL","phases":["PHASE1"],"tickers":["MRK"]}