PMC:7600245 / 52854-52887
Annnotations
LitCovid-sentences
{"project":"LitCovid-sentences","denotations":[{"id":"T394","span":{"begin":0,"end":33},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"It was first approved by the U.S."}