PubMed:32049687 / 137-145
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T25","span":{"begin":0,"end":8},"obj":"JJ"}],"text":"previous"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok29","span":{"begin":0,"end":8},"obj":"JJ"},{"id":"lookup5","span":{"begin":0,"end":8},"obj":"time_modifier"}],"text":"previous"}