The American Economic Association's registry for randomized controlled trials
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702 Trials Found
C91, D91
D81, D91, O15
H20, H26, C01, C93, D81
C91, D03
C93, D03, M52
C91; D83; D84; D91
C91, D73, K42, O12, J42
L41, C91, D22
C91, C92, D81
D81, D83