PubMed:32031570 / 1100-1106
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T170","span":{"begin":0,"end":6},"obj":"VBD"}],"text":"became"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok183","span":{"begin":0,"end":6},"obj":"VBD"},{"id":"event1","span":{"begin":0,"end":6},"obj":"OCCURRENCE"}],"text":"became"}