The American Economic Association's registry for randomized controlled trials
First published corresponds to when the trial was first made public on the Registry after being reviewed.
Last updated is the most recent time when changes to the trial's registration were published.
MD5: c5af1312293eeb7dc2627e64867be059
SHA1: acaaf565224f6179335a8eda4e0d9ca8cfabefbe
Uploaded At: December 18, 2013
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