PMC:7210464 / 745-910 JSONTXT

{"project":"LitCovid-PD-CLO","denotations":[{"id":"T4","span":{"begin":12,"end":13},"obj":"http://purl.obolibrary.org/obo/CLO_0001020"}],"text":"egion posed a higher risk to the destination regions than other factors, including geographic proximity and similarity in economic conditions. We quantify the effect"}