The American Economic Association's registry for randomized controlled trials
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946 Trials Found
L13, C91, C72, D82
C83, D84, E31
C92, D85, D91, Z13.
C78; D90
C91
D90, D81
D03 , D91 , H41, D64, C90
D90, J15, J18, K37
C93, D12, D90, Q41
C83, C91, J16, J71