PMC:7473770 / 21312-21320
Annnotations
LitCovid-sentences
{"project":"LitCovid-sentences","denotations":[{"id":"T153","span":{"begin":1,"end":7},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":" 1 vx. "}