PMC:7306567 / 23146-23180
Annnotations
LitCovid-sentences
{"project":"LitCovid-sentences","denotations":[{"id":"T165","span":{"begin":0,"end":34},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"and at least one of the following:"}