PMC:7781500 / 8223-8344 JSONTXT

{"project":"LitCovid-sentences","denotations":[{"id":"T88","span":{"begin":65,"end":121},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"General characteristics and risk factors of the study population\nRT-PCR - reverse transcription-polymerase chain reaction"}