PMC:7510993 / 6654-6777 JSONTXT

{"project":"LitCovid-sentences","denotations":[{"id":"T36","span":{"begin":0,"end":123},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"We then calculated the relative amount of foreign visitors per population of each country or region to use in the analysis."}