PubMed:31996342 / 63-72
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T12","span":{"begin":4,"end":6},"obj":"IN"}],"text":"ses of 20"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok13","span":{"begin":4,"end":6},"obj":"IN"}],"text":"ses of 20"}