PubMed:32062957 / 156-161
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T22","span":{"begin":0,"end":5},"obj":"NN"}],"text":"staff"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok24","span":{"begin":0,"end":5},"obj":"NN"}],"text":"staff"}