PMC:7274968 / 2262-2389 JSONTXT

{"project":"LitCovid-PD-CLO","denotations":[{"id":"T24","span":{"begin":123,"end":125},"obj":"http://purl.obolibrary.org/obo/CLO_0050507"}],"text":"In hospitals, the use of medical masks for all healthcare professionals was common practice in almost all centers (91%, 19/22)."}

{"project":"LitCovid-sentences","denotations":[{"id":"T22","span":{"begin":0,"end":127},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"In hospitals, the use of medical masks for all healthcare professionals was common practice in almost all centers (91%, 19/22)."}