PubMed:32160942 / 214-220
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T36","span":{"begin":3,"end":5},"obj":"IN"}],"text":"ad of "}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok40","span":{"begin":3,"end":5},"obj":"IN"}],"text":"ad of "}