The American Economic Association's registry for randomized controlled trials
Select the trial sections you'd like to search within...
133 Trials Found
I20, I23
I10, I20, J24, O15
I20, O12
I20, I24, I28, O12
I20, I25, D80, 015
I20, I21, I23, I26
I20, I29, C93, D91
A22, C93, I20, I23, J08, J16
I20, I21
J13 Early childhood stimulation; other codes: I20, I25, I30, I38