PubMed:32031570 / 1151-1156
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T178","span":{"begin":0,"end":5},"obj":"MD"}],"text":"could"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok191","span":{"begin":0,"end":5},"obj":"MD"}],"text":"could"}