PubMed:32049687 / 1077-1079
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T182","span":{"begin":0,"end":2},"obj":"TO"}],"text":"To"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok203","span":{"begin":0,"end":2},"obj":"TO"}],"text":"To"}