PMC:7050133 / 28866-28905
Annnotations
LitCovid-sentences
{"project":"LitCovid-sentences","denotations":[{"id":"T174","span":{"begin":0,"end":39},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"Highly effective of the national effort"}