The American Economic Association's registry for randomized controlled trials
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92 Trials Found
C93; I21; I25
C93, I25, 015
I12, I15, I25, J13
I25, C93, D83, D91, I24
I25, O1, C93
C93, I21, I22, I25
J13 Early childhood stimulation; other codes: I20, I25, I30, I38
I25, I28, J24, L26, O15
I21, I25, I28, J24, O15