PMC:7796041 / 30747-30914 JSONTXT

{"project":"LitCovid-sentences","denotations":[{"id":"T245","span":{"begin":0,"end":167},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"Due to different admission protocols and diagnostic standards, there are remaining missing values with regard to certain baseline parameters or biomarker measurements."}