PubMed:32081569 / 161-167
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T24","span":{"begin":0,"end":6},"obj":"NN"}],"text":"strain"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok30","span":{"begin":0,"end":6},"obj":"NN"}],"text":"strain"}