PubMed:31996494 / 1222-1227
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T203","span":{"begin":0,"end":5},"obj":"CD"}],"text":"2019-"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok224","span":{"begin":0,"end":4},"obj":"CD"},{"id":"tok225","span":{"begin":4,"end":5},"obj":":"},{"id":"lookup25","span":{"begin":0,"end":4},"obj":"year"}],"text":"2019-"}