The American Economic Association's registry for randomized controlled trials
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777 Trials Found
D91, I20, J16, O33
D31, D72, H23, H24, D83
C91, D70, D91
D91, I38
C93, D91, H26
H42, L95, D91, O18
C93, D72.
C93, D71, D72, D63, P16, J16
C90 C91 D63 D90 H23
C92; D83; D91