PMC:7079563 / 21624-21755 JSONTXT

{"project":"LitCovid-sentences","denotations":[{"id":"T165","span":{"begin":0,"end":131},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"However, it may be essential to identify an etiological agent in epidemiological studies, especially during the epidemics outbreak."}