PubMed:32170017 / 1086-1091
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T198","span":{"begin":0,"end":5},"obj":"DT"}],"text":"these"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok215","span":{"begin":0,"end":5},"obj":"DT"}],"text":"these"}