PubMed:32083638 / 772-774
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T116","span":{"begin":0,"end":2},"obj":"CD"}],"text":" 2"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok139","span":{"begin":1,"end":2},"obj":"LS"}],"text":" 2"}