The American Economic Association's registry for randomized controlled trials
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1987 Trials Found
D72, D83, L82
I12, D91, C90
C91, D80, D90
I12: Health behaviour
I12, I10, D91
C91, D83, D91, L82
C93, I21, I23
O13, D83, H5, D91
D12, D62, D64, D90, D91
C93; D83; O13; N52; Q15; Q58