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Health Serv Res. 2018 Dec;53(6):4111-4117. doi: 10.1111/1475-6773.13017. Epub 2018 Jul 25.

Matching in Difference-in-Differences: between a Rock and a Hard Place.

Author information

1
Department of Health Care Policy, Harvard Medical School, Boston, MA.
PMID:
30047131
PMCID:
PMC6232434
[Available on 2019-12-01]
DOI:
10.1111/1475-6773.13017

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