PMC:7781502 / 3461-3563 JSONTXT

{"project":"LitCovid-sentences","denotations":[{"id":"T31","span":{"begin":0,"end":102},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"We ranked countries based on the number of articles with at least one author coming from each country."}