PMC:7014669 / 4004-4127 JSONTXT

{"project":"LitCovid-sentences","denotations":[{"id":"T29","span":{"begin":0,"end":123},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"There are considerable uncertainties in assessing the risk of this event, due to lack of detailed epidemiological analyses."}