PMC:7396557 / 8249-8263
Annnotations
LitCovid-sentences
{"project":"LitCovid-sentences","denotations":[{"id":"T69","span":{"begin":0,"end":7},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"21,2020\n13 CO"}