PMC:7152911 / 34727-34734
Annnotations
LitCovid-sentences
{"project":"LitCovid-sentences","denotations":[{"id":"T295","span":{"begin":1,"end":7},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":" 2019)."}