The American Economic Association's registry for randomized controlled trials
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651 Trials Found
C91, D31, D63
D90
C78; D90
D90, D81
D03 , D91 , H41, D64, C90
A13, O28, D63, D72
D90, J15, J18, K37
C93, D12, D90, Q41
C91; D63; H23
J16, D90, O12