PubMed:32175421 / 230-232
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T37","span":{"begin":0,"end":2},"obj":"CD"}],"text":"-2"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok40","span":{"begin":0,"end":1},"obj":":"},{"id":"tok41","span":{"begin":1,"end":2},"obj":"CD"}],"text":"-2"}