PMC:7543471 / 10570-10700 JSONTXT

{"project":"LitCovid-sentences","denotations":[{"id":"T94","span":{"begin":0,"end":130},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"Retrieval runs involved 19 different hospitals in the region; the hospitals visited were on average 52.3 km (range 0–104 km) away."}