PubMed:32027573 / 653-660
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T97","span":{"begin":0,"end":7},"obj":"NN"}],"text":"contact"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok116","span":{"begin":0,"end":7},"obj":"NN"}],"text":"contact"}