PubMed:31969714 / 24-32
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T3","span":{"begin":0,"end":8},"obj":"VBZ"}],"text":"requires"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok4","span":{"begin":0,"end":8},"obj":"VBZ"},{"id":"event1","span":{"begin":0,"end":8},"obj":"I_STATE"}],"text":"requires"}