PMC:7352545 / 64187-64193
Annnotations
LitCovid-sentences
{"project":"LitCovid-sentences","denotations":[{"id":"T617","span":{"begin":0,"end":6},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"6.3.7."}