Assertion: melatonin's effectiveness | /r/CapableOf | remain at same time
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Source sentences:
text: At the same time, the effectiveness of melatonin’s most well-known use—sleep—remains something of an open question in the scientific community, even as millions of people take melatonin regularly for sleep.
text: At the same time, the effectiveness of melatonin’s most well-known use—sleep—remains something of an open question in the scientific community, even as millions of people take melatonin regularly for sleep.