The American Economic Association's registry for randomized controlled trials
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909 Trials Found
D90, J00, M52
D90
C91; D81; D91
D91, C91, D01
D83, D90, J23, J70, J71, J78, M51
D64, H41, D83
C71; C83; C92; D91
J16, C78, C91
C91; D83; D91
C91, D01, D91