PubMed:31996494 / 578-586
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T99","span":{"begin":0,"end":8},"obj":"VBG"}],"text":"existing"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok113","span":{"begin":0,"end":8},"obj":"VBG"}],"text":"existing"}