PubMed:32141570 / 843-851
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T128","span":{"begin":0,"end":8},"obj":"NN"}],"text":"research"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok139","span":{"begin":0,"end":8},"obj":"NN"}],"text":"research"}