PubMed:32074786 / 855-861
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T139","span":{"begin":0,"end":6},"obj":"NNS"}],"text":"staffs"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok149","span":{"begin":0,"end":6},"obj":"NNS"}],"text":"staffs"}