PubMed:31992543 / 46-53
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T8","span":{"begin":0,"end":7},"obj":"JJ"}],"text":"primary"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok9","span":{"begin":0,"end":7},"obj":"JJ"}],"text":"primary"}