CORD-19:fff6fe12beb51ee2641ddb5381378ff3560d8103 / 25231-25369
Annnotations
CORD-19-Sentences
{"project":"CORD-19-Sentences","denotations":[{"id":"TextSentencer_T161","span":{"begin":0,"end":138},"obj":"Sentence"},{"id":"T15665","span":{"begin":0,"end":138},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"Using a balanced panel at the state and year-level, our difference-in-difference identification strategy is formally presented in Eq. (1),"}
CORD-19_Custom_license_subset
{"project":"CORD-19_Custom_license_subset","denotations":[{"id":"T161","span":{"begin":0,"end":138},"obj":"Sentence"}],"text":"Using a balanced panel at the state and year-level, our difference-in-difference identification strategy is formally presented in Eq. (1),"}