PMC:7795972 / 5798-5944 JSONTXT

{"project":"LitCovid-sentences","denotations":[{"id":"T45","span":{"begin":22,"end":132},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"5 April and 30 April. During the study period, restrictions and policies regarding the lockdown remained mainly unaltered in Norway. In total, 29,"}