PubMed:32164400 / 1341-1346
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T240","span":{"begin":0,"end":5},"obj":"VB"}],"text":"occur"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok300","span":{"begin":0,"end":5},"obj":"VB"},{"id":"event1","span":{"begin":0,"end":5},"obj":"OCCURRENCE"}],"text":"occur"}