PMC:7143804 / 3659-3747 JSONTXT

{"project":"LitCovid-sentences","denotations":[{"id":"T32","span":{"begin":0,"end":88},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"There are several good review papers written on this topic [12,13,14,15,16,17,18,19,20]."}

{"project":"2_test","denotations":[{"id":"32106462-24030680-69893274","span":{"begin":60,"end":62},"obj":"24030680"},{"id":"32106462-19327449-69893275","span":{"begin":69,"end":71},"obj":"19327449"},{"id":"32106462-21387067-69893276","span":{"begin":75,"end":77},"obj":"21387067"},{"id":"32106462-17553097-69893277","span":{"begin":78,"end":80},"obj":"17553097"},{"id":"32106462-22704369-69893278","span":{"begin":84,"end":86},"obj":"22704369"}],"text":"There are several good review papers written on this topic [12,13,14,15,16,17,18,19,20]."}