PMC:7405836 / 670-768 JSONTXT

{"project":"LitCovid-sentences","denotations":[{"id":"T7","span":{"begin":58,"end":66},"obj":"Sentence"},{"id":"T8","span":{"begin":67,"end":74},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"the possibility of other routes should not be ruled out.\n\nAbstract\nSUMMARY\nIn recent decades, seve"}