PMC:7755033 / 33875-33878
Annnotations
LitCovid-sentences
{"project":"LitCovid-sentences","denotations":[{"id":"T343","span":{"begin":0,"end":3},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"12."}