PubMed:32031570 / 1131-1137
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T175","span":{"begin":0,"end":6},"obj":"NN"}],"text":"source"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok188","span":{"begin":0,"end":6},"obj":"NN"}],"text":"source"}