How Much Should We Trust Differences-in-differences Estimates?*

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@inproceedings{Bertrand2004HowMS, title={How Much Should We Trust Differences-in-differences Estimates?*}, author={Marianne Bertrand and Esther Duflo and Sendhil Mullainathan and Abhijit Banerjee and Victor Chernozhukov and Michael D. Grossman and Jerry Hausman and Kei Hirano and Bo E. Honor{\'e} and Guido W. Imbens and Jeffrey R. Kling and K. Brandon Lang and Steven D . Levitt and Kevin Murphy}, year={2004} }