PMC:7281378 / 7399-7401
Annnotations
LitCovid-sentences
{"project":"LitCovid-sentences","denotations":[{"id":"T50","span":{"begin":0,"end":2},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"2."}