PMC:7463108 / 31049-31068
Annnotations
LitCovid-sentences
{"project":"LitCovid-sentences","denotations":[{"id":"T443","span":{"begin":13,"end":19},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"(Chao et al. 1998a)"}