PubMed:32124000 / 382-389
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T59","span":{"begin":0,"end":7},"obj":"NNS"}],"text":"workers"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok64","span":{"begin":0,"end":7},"obj":"NNS"}],"text":"workers"}