PMC:7111504 / 21746-21763
Annnotations
LitCovid-sentences
{"project":"LitCovid-sentences","denotations":[{"id":"T230","span":{"begin":0,"end":17},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"Data availability"}