The American Economic Association's registry for randomized controlled trials
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828 Trials Found
C93, D83, I12, J13.
C93, D83, O15, J13.
C93, H25, H26
C93, J15, K14
M51,M52,D22
A22, C93, D91, I23, J0
D90, C93
C93, D83, I12, J13
C93, I21, J24, J45
C9 C93 C99 D90 M52