The American Economic Association's registry for randomized controlled trials
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677 Trials Found
D01, D91
R23, J15, J16, C93, D85
O12, Q12, J16, D13
J16, C78, C91
J12, J16, J21, J6, R40
C91; D83; D91
I21, J16.
C91, D01, D91
C91, D12
D91, D83, C91, N35