PMC:7143804 / 53581-53600
Annnotations
LitCovid-sentences
{"project":"LitCovid-sentences","denotations":[{"id":"T461","span":{"begin":0,"end":19},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"70 1538 210 2412"}