The American Economic Association's registry for randomized controlled trials
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958 Trials Found
L13, C91, C72, D82
D12, D72, D83
C92, D85, D91, Z13.
C91
D72, H57, P00
D03 , D91 , H41, D64, C90
A13, O28, D63, D72
C93; D72; D91; Z20
C83, C91, J16, J71
C91; D63; H23