PMC:7008072 / 2889-2892
Annnotations
LitCovid-sentences
{"project":"LitCovid-sentences","denotations":[{"id":"T28","span":{"begin":0,"end":3},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"15."}