PubMed:32149773 / 905-914
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T138","span":{"begin":0,"end":9},"obj":"VBN"}],"text":"conducted"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok151","span":{"begin":0,"end":9},"obj":"VBN"},{"id":"event10","span":{"begin":0,"end":9},"obj":"OCCURRENCE"}],"text":"conducted"}