PMC:7405836 / 706-761
Annnotations
LitCovid-sentences
{"project":"LitCovid-sentences","denotations":[{"id":"T7","span":{"begin":22,"end":30},"obj":"Sentence"},{"id":"T8","span":{"begin":31,"end":38},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"ld not be ruled out.\n\nAbstract\nSUMMARY\nIn recent decade"}