PMC:7210464 / 376-492 JSONTXT

{"project":"LitCovid-PD-CLO","denotations":[{"id":"T1","span":{"begin":72,"end":84},"obj":"http://purl.obolibrary.org/obo/OBI_0000968"}],"text":"in local communities. Weather characteristics 2 weeks prior are used as instrumental variables for causal inference."}

{"project":"LitCovid-sentences","denotations":[{"id":"T5","span":{"begin":22,"end":116},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"in local communities. Weather characteristics 2 weeks prior are used as instrumental variables for causal inference."}