PubMed:32164424 / 1286-1292
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T190","span":{"begin":0,"end":6},"obj":"NNS"}],"text":"series"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok217","span":{"begin":0,"end":6},"obj":"NN"}],"text":"series"}