The American Economic Association's registry for randomized controlled trials
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283 Trials Found
C90, J01, D90
C93, D81, D84
D04, D80, D90, H20, H30, H50
D81; D25; O12; O13; Q12; Q54
D90, D91, D80, D84
C83, C90, D90, D91, M31, O33
D81
D12 D81 C91
D63, D81, D91, H23
C91, D90