PubMed:32118390 / 89-94
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T13","span":{"begin":0,"end":5},"obj":"VB"}],"text":"study"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok15","span":{"begin":0,"end":5},"obj":"VB"},{"id":"event9","span":{"begin":0,"end":5},"obj":"OCCURRENCE"}],"text":"study"}