PubMed:32031570 / 3045-3053
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T621","span":{"begin":0,"end":8},"obj":"VBN"}],"text":"switched"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok732","span":{"begin":0,"end":8},"obj":"VBN"},{"id":"event20","span":{"begin":0,"end":8},"obj":"OCCURRENCE"}],"text":"switched"}