PubMed:32114747 / 297-304
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T48","span":{"begin":0,"end":7},"obj":"VB"}],"text":"develop"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok53","span":{"begin":0,"end":7},"obj":"VB"},{"id":"event5","span":{"begin":0,"end":7},"obj":"OCCURRENCE"}],"text":"develop"}