PubMed:32050635 / 1186-1192
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T191","span":{"begin":0,"end":6},"obj":"VBN"}],"text":"become"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok201","span":{"begin":0,"end":6},"obj":"VBN"},{"id":"event7","span":{"begin":0,"end":6},"obj":"OCCURRENCE"}],"text":"become"}