PubMed:32044814 / 2003-2011
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T327","span":{"begin":0,"end":8},"obj":"NN"}],"text":"interval"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok364","span":{"begin":0,"end":8},"obj":"NN"}],"text":"interval"}