The American Economic Association's registry for randomized controlled trials
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838 Trials Found
D90, J15, J18, K37
C93, D12, D90, Q41
C83, C91, J16, J71
J13, J16 , C83, Z13
D10, I12, O12, J13
I14, I18, I28, I24, I31, J13, I32, J13, J24, J32, O15
C91, D91, J01, J16, J71
A22, C93, I20, I23, J08, J16
D90, I20
C83; D84; E31; J13.