PMC:7283670 / 29187-29215
Annnotations
LitCovid-sentences
{"project":"LitCovid-sentences","denotations":[{"id":"T232","span":{"begin":0,"end":28},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"5.2 Epidemiological history"}