PubMed:32105637 / 2401-2406
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T509","span":{"begin":0,"end":5},"obj":"NNS"}],"text":"weeks"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok559","span":{"begin":0,"end":5},"obj":"NNS"},{"id":"lookup83","span":{"begin":0,"end":5},"obj":"date_unit"}],"text":"weeks"}