PMC:7386785 / 51083-51402 JSONTXT

{"project":"LitCovid-PD-CLO","denotations":[{"id":"T331","span":{"begin":218,"end":223},"obj":"http://purl.obolibrary.org/obo/UBERON_0000473"},{"id":"T332","span":{"begin":233,"end":234},"obj":"http://purl.obolibrary.org/obo/CLO_0001020"}],"text":"Participant flow was unclear in four studies (Yan 2020a; Yang 2020d; Zhao 2020a; Zhu 2020b), either because the timing of recording signs and symptoms and conduct of the reference standard was unclear, or because some tests received a second or third reference standard at unclear time points during hospital admission."}

{"project":"LitCovid-sentences","denotations":[{"id":"T470","span":{"begin":0,"end":319},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"Participant flow was unclear in four studies (Yan 2020a; Yang 2020d; Zhao 2020a; Zhu 2020b), either because the timing of recording signs and symptoms and conduct of the reference standard was unclear, or because some tests received a second or third reference standard at unclear time points during hospital admission."}

{"project":"LitCovid-PubTator","denotations":[{"id":"883","span":{"begin":0,"end":11},"obj":"Species"}],"attributes":[{"id":"A883","pred":"tao:has_database_id","subj":"883","obj":"Tax:9606"}],"namespaces":[{"prefix":"Tax","uri":"https://www.ncbi.nlm.nih.gov/taxonomy/"},{"prefix":"MESH","uri":"https://id.nlm.nih.gov/mesh/"},{"prefix":"Gene","uri":"https://www.ncbi.nlm.nih.gov/gene/"},{"prefix":"CVCL","uri":"https://web.expasy.org/cellosaurus/CVCL_"}],"text":"Participant flow was unclear in four studies (Yan 2020a; Yang 2020d; Zhao 2020a; Zhu 2020b), either because the timing of recording signs and symptoms and conduct of the reference standard was unclear, or because some tests received a second or third reference standard at unclear time points during hospital admission."}