The American Economic Association's registry for randomized controlled trials
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941 Trials Found
C91, D01, D83
L13, C91, C72, D82
C92, D85, D91, Z13.
D81; D25; O12; O13; Q12; Q54
C91
D90, D81
D03 , D91 , H41, D64, C90
C99, D11, D81, D91
D81
C83, C91, J16, J71