PubMed:32087621 / 424-430
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T73","span":{"begin":0,"end":6},"obj":"NN"}],"text":"timing"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok78","span":{"begin":0,"end":6},"obj":"NN"}],"text":"timing"}