PMC:7589389 / 8817-9261 JSONTXT

{"project":"LitCovid-PD-CLO","denotations":[{"id":"T32","span":{"begin":30,"end":39},"obj":"http://purl.obolibrary.org/obo/OBI_0000245"},{"id":"T33","span":{"begin":275,"end":280},"obj":"http://purl.obolibrary.org/obo/UBERON_0000473"}],"text":"The remainder of the paper is organized as follows. Section 2 discusses the background, literature review, and hypothesis development. Section 3 presents the sample selection, empirical model, and descriptive statistics. Section 4 illustrates the main results and robustness tests. Section 5 shows the results of cross-sectional analyses. Section 6 adds additional analyses and sensitivity checks. Section 7 provides conclusions and discussion."}

{"project":"LitCovid-sentences","denotations":[{"id":"T60","span":{"begin":0,"end":51},"obj":"Sentence"},{"id":"T61","span":{"begin":52,"end":134},"obj":"Sentence"},{"id":"T62","span":{"begin":135,"end":220},"obj":"Sentence"},{"id":"T63","span":{"begin":221,"end":281},"obj":"Sentence"},{"id":"T64","span":{"begin":282,"end":338},"obj":"Sentence"},{"id":"T65","span":{"begin":339,"end":397},"obj":"Sentence"},{"id":"T66","span":{"begin":398,"end":444},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"The remainder of the paper is organized as follows. Section 2 discusses the background, literature review, and hypothesis development. Section 3 presents the sample selection, empirical model, and descriptive statistics. Section 4 illustrates the main results and robustness tests. Section 5 shows the results of cross-sectional analyses. Section 6 adds additional analyses and sensitivity checks. Section 7 provides conclusions and discussion."}