The American Economic Association's registry for randomized controlled trials
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970 Trials Found
C91, D78
C72, D91, H41
D91, C91
C92, H41
C78, C91, D63, Q28
C21, C91, M50
C91, C25, D73
C91, C92, D64, Q56
D91, C91, D83
D64, H41, C93, D91