PMC:7281378 / 1049-1261
Annnotations
LitCovid-PD-CLO
{"project":"LitCovid-PD-CLO","denotations":[{"id":"T3841","span":{"begin":176,"end":182},"obj":"http://purl.obolibrary.org/obo/CLO_0007919"},{"id":"T653","span":{"begin":176,"end":182},"obj":"http://purl.obolibrary.org/obo/CLO_0007920"}],"text":"nce were included in this systematic review. The highest number of research articles (n = 107) were reported from Asia, followed by Americas (n = 97), Europe (n = 55), Africa (n = 18), and Australia (n = 4). The "}
LitCovid-sentences
{"project":"LitCovid-sentences","denotations":[{"id":"T9","span":{"begin":45,"end":207},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"nce were included in this systematic review. The highest number of research articles (n = 107) were reported from Asia, followed by Americas (n = 97), Europe (n = 55), Africa (n = 18), and Australia (n = 4). The "}