PMC:7340764 / 52809-52940 JSONTXT

{"project":"LitCovid-sentences","denotations":[{"id":"T368","span":{"begin":0,"end":131},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"This idea and concept was further formalized with the formulation of guidelines for school health under HWCs, released in Feb 2020."}